321538928802 has 64 divisors (see below), whose sum is σ = 792867339264. Its totient is φ = 84652879680.

The previous prime is 321538928791. The next prime is 321538928869. The reversal of 321538928802 is 208829835123.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 203908 + ... + 827439.

It is an arithmetic number, because the mean of its divisors is an integer number (12388552176).

Almost surely, 2^321538928802 is an apocalyptic number.

321538928802 is an abundant number, since it is smaller than the sum of its proper divisors (471328410462).

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

321538928802 is a wasteful number, since it uses less digits than its factorization.

321538928802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031943.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 321538928802 in words is "three hundred twenty-one billion, five hundred thirty-eight million, nine hundred twenty-eight thousand, eight hundred two".