315661656414545 has 24 divisors (see below), whose sum is σ = 440638997652864. Its totient is φ = 216453170050656.

The previous prime is 315661656414457. The next prime is 315661656414571. The reversal of 315661656414545 is 545414656166513.

It is not a de Polignac number, because 315661656414545 - 2⁴⁶ = 245292912236881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114485114 + ... + 117209916.

It is an arithmetic number, because the mean of its divisors is an integer number (18359958235536).

Almost surely, 2^{315661656414545} is an apocalyptic number.

315661656414545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

315661656414545 is a deficient number, since it is larger than the sum of its proper divisors (124977341238319).

315661656414545 is a wasteful number, since it uses less digits than its factorization.

315661656414545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197669 (or 3197662 counting only the distinct ones).

The product of its digits is 155520000, while the sum is 62.

The spelling of 315661656414545 in words is "three hundred fifteen trillion, six hundred sixty-one billion, six hundred fifty-six million, four hundred fourteen thousand, five hundred forty-five".