319664977021 has 8 divisors (see below), whose sum is σ = 344259586944. Its totient is φ = 295071080880.

The previous prime is 319664977007. The next prime is 319664977067. The reversal of 319664977021 is 120779466913.

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

It is a cyclic number.

It is not a de Polignac number, because 319664977021 - 2⁹ = 319664976509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319664977321) 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, 1080936 + ... + 1344526.

It is an arithmetic number, because the mean of its divisors is an integer number (43032448368).

Almost surely, 2^319664977021 is an apocalyptic number.

It is an amenable number.

319664977021 is a deficient number, since it is larger than the sum of its proper divisors (24594609923).

319664977021 is a wasteful number, since it uses less digits than its factorization.

319664977021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356891.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 319664977021 in words is "three hundred nineteen billion, six hundred sixty-four million, nine hundred seventy-seven thousand, twenty-one".