131658120678 has 48 divisors (see below), whose sum is σ = 324324698544. Its totient is φ = 35403863040.

The previous prime is 131658120647. The next prime is 131658120683. The reversal of 131658120678 is 876021856131.

It is a super-2 number, since 2×131658120678² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13166083 + ... + 13176078.

It is an arithmetic number, because the mean of its divisors is an integer number (6756764553).

Almost surely, 2^131658120678 is an apocalyptic number.

131658120678 is an abundant number, since it is smaller than the sum of its proper divisors (192666577866).

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

131658120678 is a wasteful number, since it uses less digits than its factorization.

131658120678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26342197 (or 26342190 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 131658120678 in words is "one hundred thirty-one billion, six hundred fifty-eight million, one hundred twenty thousand, six hundred seventy-eight".