157123659 has 16 divisors (see below), whose sum is σ = 261192960. Its totient is φ = 81622560.

The previous prime is 157123651. The next prime is 157123661. The reversal of 157123659 is 956321751.

It is not a de Polignac number, because 157123659 - 2³ = 157123651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157123651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339864 + ... + 340325.

It is an arithmetic number, because the mean of its divisors is an integer number (16324560).

Almost surely, 2^157123659 is an apocalyptic number.

157123659 is a deficient number, since it is larger than the sum of its proper divisors (104069301).

157123659 is a wasteful number, since it uses less digits than its factorization.

157123659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680210.

The product of its digits is 56700, while the sum is 39.

The square root of 157123659 is about 12534.8976461717. The cubic root of 157123659 is about 539.6106692981.

The spelling of 157123659 in words is "one hundred fifty-seven million, one hundred twenty-three thousand, six hundred fifty-nine".