131297545782 has 64 divisors (see below), whose sum is σ = 332699693760. Its totient is φ = 38022815232.

The previous prime is 131297545777. The next prime is 131297545789. The reversal of 131297545782 is 287545792131.

131297545782 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 97 + 545 + 7 + 8 + 2 = 666.

It is a super-3 number, since 3×131297545782³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131297545789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5489053 + ... + 5512920.

It is an arithmetic number, because the mean of its divisors is an integer number (5198432715).

Almost surely, 2^131297545782 is an apocalyptic number.

131297545782 is an abundant number, since it is smaller than the sum of its proper divisors (201402147978).

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

131297545782 is a wasteful number, since it uses less digits than its factorization.

131297545782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11002014 (or 11002008 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The spelling of 131297545782 in words is "one hundred thirty-one billion, two hundred ninety-seven million, five hundred forty-five thousand, seven hundred eighty-two".