76626723721 has 32 divisors (see below), whose sum is σ = 85184265600. Its totient is φ = 68645905920.

The previous prime is 76626723703. The next prime is 76626723749. The reversal of 76626723721 is 12732762667.

It is a cyclic number.

It is not a de Polignac number, because 76626723721 - 2¹⁷ = 76626592649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76626723781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7748446 + ... + 7758328.

It is an arithmetic number, because the mean of its divisors is an integer number (2662008300).

Almost surely, 2^76626723721 is an apocalyptic number.

It is an amenable number.

76626723721 is a deficient number, since it is larger than the sum of its proper divisors (8557541879).

76626723721 is a wasteful number, since it uses less digits than its factorization.

76626723721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10249.

The product of its digits is 1778112, while the sum is 49.

The spelling of 76626723721 in words is "seventy-six billion, six hundred twenty-six million, seven hundred twenty-three thousand, seven hundred twenty-one".