321316652016 has 30 divisors (see below), whose sum is σ = 899240352920. Its totient is φ = 107105550624.

The previous prime is 321316652011. The next prime is 321316652051. The reversal of 321316652016 is 610256613123.

321316652016 is a `hidden beast` number, since 32 + 1 + 31 + 66 + 520 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321316652011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115682676 + ... + 1115682963.

Almost surely, 2^321316652016 is an apocalyptic number.

321316652016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

321316652016 is an abundant number, since it is smaller than the sum of its proper divisors (577923700904).

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

321316652016 is a wasteful number, since it uses less digits than its factorization.

321316652016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231365653 (or 2231365644 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 321316652016 in words is "three hundred twenty-one billion, three hundred sixteen million, six hundred fifty-two thousand, sixteen".