315160121161621 has 8 divisors (see below), whose sum is σ = 319150183546880. Its totient is φ = 311170076120592.

The previous prime is 315160121161609. The next prime is 315160121161661. The reversal of 315160121161621 is 126161121061513.

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 315160121161621 - 2²⁹ = 315159584290709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315160121161661) 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, 34414111 + ... + 42598723.

It is an arithmetic number, because the mean of its divisors is an integer number (39893772943360).

Almost surely, 2^{315160121161621} is an apocalyptic number.

It is an amenable number.

315160121161621 is a deficient number, since it is larger than the sum of its proper divisors (3990062385259).

315160121161621 is an equidigital number, since it uses as much as digits as its factorization.

315160121161621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672115.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 315160121161621 in words is "three hundred fifteen trillion, one hundred sixty billion, one hundred twenty-one million, one hundred sixty-one thousand, six hundred twenty-one".