76868626521 has 16 divisors (see below), whose sum is σ = 108575558784. Its totient is φ = 48206786304.

The previous prime is 76868626507. The next prime is 76868626607. The reversal of 76868626521 is 12562686867.

It is not a de Polignac number, because 76868626521 - 2⁵ = 76868626489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76868626501) 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, 281341 + ... + 482586.

It is an arithmetic number, because the mean of its divisors is an integer number (6785972424).

Almost surely, 2^76868626521 is an apocalyptic number.

It is an amenable number.

76868626521 is a deficient number, since it is larger than the sum of its proper divisors (31706932263).

76868626521 is a wasteful number, since it uses less digits than its factorization.

76868626521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765920.

The product of its digits is 11612160, while the sum is 57.

The spelling of 76868626521 in words is "seventy-six billion, eight hundred sixty-eight million, six hundred twenty-six thousand, five hundred twenty-one".