531157751136 has 72 divisors (see below), whose sum is σ = 1523847026520. Its totient is φ = 175485735936.

The previous prime is 531157751129. The next prime is 531157751153. The reversal of 531157751136 is 631157751135.

531157751136 is a `hidden beast` number, since 5 + 3 + 11 + 577 + 51 + 13 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 531157751091 and 531157751100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8128066 + ... + 8193153.

It is an arithmetic number, because the mean of its divisors is an integer number (21164542035).

Almost surely, 2^531157751136 is an apocalyptic number.

It is an amenable number.

531157751136 is an abundant number, since it is smaller than the sum of its proper divisors (992689275384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531157751136 is a wasteful number, since it uses less digits than its factorization.

531157751136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16321348 (or 16321337 counting only the distinct ones).

The product of its digits is 330750, while the sum is 45.

Subtracting 531157751136 from its reverse (631157751135), we obtain a palindrome (99999999999).

The spelling of 531157751136 in words is "five hundred thirty-one billion, one hundred fifty-seven million, seven hundred fifty-one thousand, one hundred thirty-six".