319072621660816 has 45 divisors (see below), whose sum is σ = 628867127015881. Its totient is φ = 156830233500032.

The previous prime is 319072621660781. The next prime is 319072621660823. The reversal of 319072621660816 is 618066126270913.

The square root of 319072621660816 is 17862604.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 317994347100816 + 1078274560000 = 17832396^2 + 1038400^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4215536700 + ... + 4215612388.

Almost surely, 2^{319072621660816} is an apocalyptic number.

319072621660816 is the 17862604-th square number.

It is an amenable number.

319072621660816 is a deficient number, since it is larger than the sum of its proper divisors (309794505355065).

319072621660816 is an frugal number, since it uses more digits than its factorization.

319072621660816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151504 (or 75750 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 319072621660816 in words is "three hundred nineteen trillion, seventy-two billion, six hundred twenty-one million, six hundred sixty thousand, eight hundred sixteen".