321974356056 has 32 divisors (see below), whose sum is σ = 805014230640. Its totient is φ = 107314339968.

The previous prime is 321974356049. The next prime is 321974356061. The reversal of 321974356056 is 650653479123.

It is a happy number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 399091 + ... + 896226.

Almost surely, 2^321974356056 is an apocalyptic number.

It is an amenable number.

321974356056 is an abundant number, since it is smaller than the sum of its proper divisors (483039874584).

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

321974356056 is a wasteful number, since it uses less digits than its factorization.

321974356056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305683 (or 1305679 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 51.

It can be divided in two parts, 321974 and 356056, that added together give a triangular number (678030 = T₁₁₆₄).

The spelling of 321974356056 in words is "three hundred twenty-one billion, nine hundred seventy-four million, three hundred fifty-six thousand, fifty-six".