321672578713 has 8 divisors (see below), whose sum is σ = 327239496936. Its totient is φ = 316137024000.

The previous prime is 321672578687. The next prime is 321672578719. The reversal of 321672578713 is 317875276123.

It can be written as a sum of positive squares in 4 ways, for example, as 63067783689 + 258604795024 = 251133^2 + 508532^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321672578713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321672578719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7820188 + ... + 7861213.

It is an arithmetic number, because the mean of its divisors is an integer number (40904937117).

Almost surely, 2^321672578713 is an apocalyptic number.

It is an amenable number.

321672578713 is a deficient number, since it is larger than the sum of its proper divisors (5566918223).

321672578713 is a wasteful number, since it uses less digits than its factorization.

321672578713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15681755.

The product of its digits is 2963520, while the sum is 52.

The spelling of 321672578713 in words is "three hundred twenty-one billion, six hundred seventy-two million, five hundred seventy-eight thousand, seven hundred thirteen".