76921545648 has 20 divisors (see below), whose sum is σ = 198713993048. Its totient is φ = 25640515200.

The previous prime is 76921545607. The next prime is 76921545653. The reversal of 76921545648 is 84654512967.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801266053 + ... + 801266148.

Almost surely, 2^76921545648 is an apocalyptic number.

It is an amenable number.

76921545648 is an abundant number, since it is smaller than the sum of its proper divisors (121792447400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76921545648 is a wasteful number, since it uses less digits than its factorization.

76921545648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602532212 (or 1602532206 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The spelling of 76921545648 in words is "seventy-six billion, nine hundred twenty-one million, five hundred forty-five thousand, six hundred forty-eight".