1615215457156 has 12 divisors (see below), whose sum is σ = 3230430914368. Its totient is φ = 692235195912.

The previous prime is 1615215457153. The next prime is 1615215457171. The reversal of 1615215457156 is 6517545125161.

1615215457156 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1615215457153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28843133136 + ... + 28843133191.

Almost surely, 2^{1615215457156} is an apocalyptic number.

It is an amenable number.

1615215457156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1615215457156 is a wasteful number, since it uses less digits than its factorization.

1615215457156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57686266338 (or 57686266336 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 49.

The spelling of 1615215457156 in words is "one trillion, six hundred fifteen billion, two hundred fifteen million, four hundred fifty-seven thousand, one hundred fifty-six".