61756047672051 has 16 divisors (see below), whose sum is σ = 86712692774400. Its totient is φ = 38986927416288.

The previous prime is 61756047672043. The next prime is 61756047672073. The reversal of 61756047672051 is 15027674065716.

It is not a de Polignac number, because 61756047672051 - 2³ = 61756047672043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 61756047671982 and 61756047672000.

It is not an unprimeable number, because it can be changed into a prime (61756047672551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234480651 + ... + 234743876.

It is an arithmetic number, because the mean of its divisors is an integer number (5419543298400).

Almost surely, 2^{61756047672051} is an apocalyptic number.

61756047672051 is a deficient number, since it is larger than the sum of its proper divisors (24956645102349).

61756047672051 is a wasteful number, since it uses less digits than its factorization.

61756047672051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469226858.

The product of its (nonzero) digits is 14817600, while the sum is 57.

The spelling of 61756047672051 in words is "sixty-one trillion, seven hundred fifty-six billion, forty-seven million, six hundred seventy-two thousand, fifty-one".