76532920521 has 4 divisors (see below), whose sum is σ = 102043894032. Its totient is φ = 51021947012.

The previous prime is 76532920511. The next prime is 76532920543. The reversal of 76532920521 is 12502923567.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76532920521 - 2⁷ = 76532920393 is a prime.

It is a super-2 number, since 2×76532920521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76532920511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12755486751 + ... + 12755486756.

It is an arithmetic number, because the mean of its divisors is an integer number (25510973508).

Almost surely, 2^76532920521 is an apocalyptic number.

It is an amenable number.

76532920521 is a deficient number, since it is larger than the sum of its proper divisors (25510973511).

76532920521 is a wasteful number, since it uses less digits than its factorization.

76532920521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25510973510.

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 76532920521 in words is "seventy-six billion, five hundred thirty-two million, nine hundred twenty thousand, five hundred twenty-one".