157116075021 has 24 divisors (see below), whose sum is σ = 230809464600. Its totient is φ = 102962793600.

The previous prime is 157116074993. The next prime is 157116075043. The reversal of 157116075021 is 120570611751.

It is a happy number.

157116075021 is a `hidden beast` number, since 1 + 571 + 1 + 60 + 7 + 5 + 0 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5927306121 + 151188768900 = 76989^2 + 388830^2 .

It is not a de Polignac number, because 157116075021 - 2⁵ = 157116074989 is a prime.

It is a super-2 number, since 2×157116075021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157116275021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 801655 + ... + 978203.

It is an arithmetic number, because the mean of its divisors is an integer number (9617061025).

Almost surely, 2^157116075021 is an apocalyptic number.

It is an amenable number.

157116075021 is a deficient number, since it is larger than the sum of its proper divisors (73693389579).

157116075021 is a wasteful number, since it uses less digits than its factorization.

157116075021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178237 (or 178234 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 36.

Adding to 157116075021 its reverse (120570611751), we get a palindrome (277686686772).

The spelling of 157116075021 in words is "one hundred fifty-seven billion, one hundred sixteen million, seventy-five thousand, twenty-one".