76720621732 has 12 divisors (see below), whose sum is σ = 134316516096. Its totient is φ = 38344474280.

The previous prime is 76720621723. The next prime is 76720621751. The reversal of 76720621732 is 23712602767.

It is an unprimeable number.

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, 3948244 + ... + 3967627.

It is an arithmetic number, because the mean of its divisors is an integer number (11193043008).

Almost surely, 2^76720621732 is an apocalyptic number.

It is an amenable number.

76720621732 is a deficient number, since it is larger than the sum of its proper divisors (57595894364).

76720621732 is a wasteful number, since it uses less digits than its factorization.

76720621732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7918298 (or 7918296 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 43.

The spelling of 76720621732 in words is "seventy-six billion, seven hundred twenty million, six hundred twenty-one thousand, seven hundred thirty-two".