321630356610993 has 64 divisors (see below), whose sum is σ = 449910706452480. Its totient is φ = 204126822144000.

The previous prime is 321630356610989. The next prime is 321630356611007. The reversal of 321630356610993 is 399016653036123.

It is not a de Polignac number, because 321630356610993 - 2² = 321630356610989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321630356610943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4059463303 + ... + 4059542531.

It is an arithmetic number, because the mean of its divisors is an integer number (7029854788320).

Almost surely, 2^{321630356610993} is an apocalyptic number.

It is an amenable number.

321630356610993 is a deficient number, since it is larger than the sum of its proper divisors (128280349841487).

321630356610993 is a wasteful number, since it uses less digits than its factorization.

321630356610993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80890.

The product of its (nonzero) digits is 14171760, while the sum is 57.

The spelling of 321630356610993 in words is "three hundred twenty-one trillion, six hundred thirty billion, three hundred fifty-six million, six hundred ten thousand, nine hundred ninety-three".