131647766456 has 16 divisors (see below), whose sum is σ = 247031078400. Its totient is φ = 65772812224.

The previous prime is 131647766449. The next prime is 131647766461. The reversal of 131647766456 is 654667746131.

It is a happy number.

It is a super-2 number, since 2×131647766456² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6372920 + ... + 6393543.

It is an arithmetic number, because the mean of its divisors is an integer number (15439442400).

Almost surely, 2^131647766456 is an apocalyptic number.

It is an amenable number.

131647766456 is a deficient number, since it is larger than the sum of its proper divisors (115383311944).

131647766456 is a wasteful number, since it uses less digits than its factorization.

131647766456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12767758 (or 12767754 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 56.

The spelling of 131647766456 in words is "one hundred thirty-one billion, six hundred forty-seven million, seven hundred sixty-six thousand, four hundred fifty-six".