157316860736021 has 4 divisors (see below), whose sum is σ = 179790697984032. Its totient is φ = 134843023488012.

The previous prime is 157316860736011. The next prime is 157316860736047. The reversal of 157316860736021 is 120637068613751.

It is a happy number.

157316860736021 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 157316860736021 - 2¹⁴ = 157316860719637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157316860736011) 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, 11236918623995 + ... + 11236918624008.

It is an arithmetic number, because the mean of its divisors is an integer number (44947674496008).

Almost surely, 2^{157316860736021} is an apocalyptic number.

It is an amenable number.

157316860736021 is a deficient number, since it is larger than the sum of its proper divisors (22473837248011).

157316860736021 is an equidigital number, since it uses as much as digits as its factorization.

157316860736021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22473837248010.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 157316860736021 in words is "one hundred fifty-seven trillion, three hundred sixteen billion, eight hundred sixty million, seven hundred thirty-six thousand, twenty-one".