131177249856 has 63 divisors (see below), whose sum is σ = 376020818823. Its totient is φ = 43722852480.

The previous prime is 131177249851. The next prime is 131177249857. The reversal of 131177249856 is 658942771131.

The square root of 131177249856 is 362184.

It is a perfect power (a square), and thus also a powerful number.

131177249856 is a `hidden beast` number, since 1 + 31 + 1 + 7 + 72 + 498 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (131177249851) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8684871 + ... + 8699961.

Almost surely, 2^131177249856 is an apocalyptic number.

131177249856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

131177249856 is the 362184-th square number.

It is an amenable number.

131177249856 is an abundant number, since it is smaller than the sum of its proper divisors (244843568967).

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

131177249856 is an frugal number, since it uses more digits than its factorization.

131177249856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30200 (or 15096 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 131177249856 in words is "one hundred thirty-one billion, one hundred seventy-seven million, two hundred forty-nine thousand, eight hundred fifty-six".