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61984614719901 = 317271493211903
BaseRepresentation
bin11100001011111111010101…
…11100010010000110011101
322010110200010101010011022110
432011333222330102012131
531111023442332014101
6335455201111304233
716025145351630456
oct1605775274220635
9263420111104273
1061984614719901
111882858908a275
126b5104a07b079
13287817c80a213
1411440ddb5012d
15727567013cd6
hex385feaf1219d

61984614719901 has 12 divisors (see below), whose sum is σ = 87793664218112. Its totient is φ = 38892307274688.

The previous prime is 61984614719891. The next prime is 61984614719953. The reversal of 61984614719901 is 10991741648916.

It is a happy number.

It is not a de Polignac number, because 61984614719901 - 211 = 61984614717853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61984614714901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35746605085 + ... + 35746606818.

Almost surely, 261984614719901 is an apocalyptic number.

It is an amenable number.

61984614719901 is a deficient number, since it is larger than the sum of its proper divisors (25809049498211).

61984614719901 is a wasteful number, since it uses less digits than its factorization.

61984614719901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71493211940 (or 71493211923 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 66.

The spelling of 61984614719901 in words is "sixty-one trillion, nine hundred eighty-four billion, six hundred fourteen million, seven hundred nineteen thousand, nine hundred one".

Divisors: 1 3 17 51 289 867 71493211903 214479635709 1215384602351 3646153807053 20661538239967 61984614719901