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61869408801 = 3123116753157
BaseRepresentation
bin111001100111101101…
…000100001000100001
312220200210012121112020
4321213231010020201
52003202032040201
644231124052053
74320116204064
oct714755041041
9186623177466
1061869408801
1124269739612
12bba7b34029
135aacb3c945
142dccc768db
15192191ba36
hexe67b44221

61869408801 has 8 divisors (see below), whose sum is σ = 82559562624. Its totient is φ = 41212763760.

The previous prime is 61869408793. The next prime is 61869408841. The reversal of 61869408801 is 10880496816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61869408801 - 23 = 61869408793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61869408841) 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, 8372886 + ... + 8380271.

It is an arithmetic number, because the mean of its divisors is an integer number (10319945328).

Almost surely, 261869408801 is an apocalyptic number.

It is an amenable number.

61869408801 is a deficient number, since it is larger than the sum of its proper divisors (20690153823).

61869408801 is a wasteful number, since it uses less digits than its factorization.

61869408801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16754391.

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 61869408801 in words is "sixty-one billion, eight hundred sixty-nine million, four hundred eight thousand, eight hundred one".

Divisors: 1 3 1231 3693 16753157 50259471 20623136267 61869408801