76560012561 has 8 divisors (see below), whose sum is σ = 102082659840. Its totient is φ = 51038686832.

The previous prime is 76560012547. The next prime is 76560012569. The reversal of 76560012561 is 16521006567.

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

It is a cyclic number.

It is not a de Polignac number, because 76560012561 - 2⁶ = 76560012497 is a prime.

It is a super-2 number, since 2×76560012561² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76560012569) 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, 186225 + ... + 433358.

It is an arithmetic number, because the mean of its divisors is an integer number (12760332480).

Almost surely, 2^76560012561 is an apocalyptic number.

It is an amenable number.

76560012561 is a deficient number, since it is larger than the sum of its proper divisors (25522647279).

76560012561 is a wasteful number, since it uses less digits than its factorization.

76560012561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660775.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 76560012561 in words is "seventy-six billion, five hundred sixty million, twelve thousand, five hundred sixty-one".