76922021647 has 12 divisors (see below), whose sum is σ = 80983161720. Its totient is φ = 73036076880.

The previous prime is 76922021597. The next prime is 76922021653. The reversal of 76922021647 is 74612022967.

It is a happy number.

It is not a de Polignac number, because 76922021647 - 2²³ = 76913633039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76922021597 and 76922021606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76922021047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 704197 + ... + 806062.

It is an arithmetic number, because the mean of its divisors is an integer number (6748596810).

Almost surely, 2^76922021647 is an apocalyptic number.

76922021647 is a deficient number, since it is larger than the sum of its proper divisors (4061140073).

76922021647 is a wasteful number, since it uses less digits than its factorization.

76922021647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510374 (or 1510343 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 76922021647 in words is "seventy-six billion, nine hundred twenty-two million, twenty-one thousand, six hundred forty-seven".