157670021523 has 16 divisors (see below), whose sum is σ = 245370977280. Its totient is φ = 88180193856.

The previous prime is 157670021489. The next prime is 157670021527. The reversal of 157670021523 is 325120076751.

It is a happy number.

It is not a de Polignac number, because 157670021523 - 2⁶ = 157670021459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157670021527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79872378 + ... + 79874351.

It is an arithmetic number, because the mean of its divisors is an integer number (15335686080).

Almost surely, 2^157670021523 is an apocalyptic number.

157670021523 is a deficient number, since it is larger than the sum of its proper divisors (87700955757).

157670021523 is a wasteful number, since it uses less digits than its factorization.

157670021523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159746786.

The product of its (nonzero) digits is 88200, while the sum is 39.

The spelling of 157670021523 in words is "one hundred fifty-seven billion, six hundred seventy million, twenty-one thousand, five hundred twenty-three".