157215663 has 36 divisors (see below), whose sum is σ = 257717824. Its totient is φ = 92188800.

The previous prime is 157215661. The next prime is 157215673. The reversal of 157215663 is 366512751.

It is not a de Polignac number, because 157215663 - 2¹ = 157215661 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157215661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31431 + ... + 36087.

Almost surely, 2^157215663 is an apocalyptic number.

157215663 is a deficient number, since it is larger than the sum of its proper divisors (100502161).

157215663 is a wasteful number, since it uses less digits than its factorization.

157215663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716 (or 4702 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 157215663 is about 12538.5670233883. The cubic root of 157215663 is about 539.7159720330.

The spelling of 157215663 in words is "one hundred fifty-seven million, two hundred fifteen thousand, six hundred sixty-three".