315155045730321 has 16 divisors (see below), whose sum is σ = 466940699891520. Its totient is φ = 210083412689280.

The previous prime is 315155045730299. The next prime is 315155045730353. The reversal of 315155045730321 is 123037540551513.

315155045730321 is a `hidden beast` number, since 3 + 1 + 5 + 1 + 5 + 50 + 4 + 573 + 0 + 3 + 21 = 666.

It is not a de Polignac number, because 315155045730321 - 2¹⁸ = 315155045468177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315155045730121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553908480 + ... + 554477153.

It is an arithmetic number, because the mean of its divisors is an integer number (29183793743220).

Almost surely, 2^{315155045730321} is an apocalyptic number.

It is an amenable number.

315155045730321 is a deficient number, since it is larger than the sum of its proper divisors (151785654161199).

315155045730321 is a wasteful number, since it uses less digits than its factorization.

315155045730321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108396173 (or 1108396167 counting only the distinct ones).

The product of its (nonzero) digits is 945000, while the sum is 45.

The spelling of 315155045730321 in words is "three hundred fifteen trillion, one hundred fifty-five billion, forty-five million, seven hundred thirty thousand, three hundred twenty-one".