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61875042912 = 253371614633
BaseRepresentation
bin111001101000000010…
…100011101001100000
312220201011210212002000
4321220002203221200
52003210002333122
644231444524000
74320215121054
oct715002435140
9186634725060
1061875042912
1124271937601
12bba99b0600
135ab1063237
142dcd901c64
1519221810ac
hexe680a3a60

61875042912 has 48 divisors (see below), whose sum is σ = 180468877680. Its totient is φ = 20625014016.

The previous prime is 61875042907. The next prime is 61875042917. The reversal of 61875042912 is 21924057816.

61875042912 is a `hidden beast` number, since 61 + 87 + 504 + 2 + 9 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (61875042907) and next prime (61875042917).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61875042917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35806453 + ... + 35808180.

It is an arithmetic number, because the mean of its divisors is an integer number (3759768285).

Almost surely, 261875042912 is an apocalyptic number.

It is an amenable number.

61875042912 is an abundant number, since it is smaller than the sum of its proper divisors (118593834768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61875042912 is a wasteful number, since it uses less digits than its factorization.

61875042912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71614652 (or 71614638 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 61875042912 in words is "sixty-one billion, eight hundred seventy-five million, forty-two thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 96 108 144 216 288 432 864 71614633 143229266 214843899 286458532 429687798 572917064 644531697 859375596 1145834128 1289063394 1718751192 1933595091 2291668256 2578126788 3437502384 3867190182 5156253576 6875004768 7734380364 10312507152 15468760728 20625014304 30937521456 61875042912