131561671670 has 192 divisors, whose sum is σ = 285512325120. Its totient is φ = 43259673600.

The previous prime is 131561671669. The next prime is 131561671721. The reversal of 131561671670 is 76176165131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 216740507 + ... + 216741113.

It is an arithmetic number, because the mean of its divisors is an integer number (1487043360).

Almost surely, 2^131561671670 is an apocalyptic number.

131561671670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131561671670 is an abundant number, since it is smaller than the sum of its proper divisors (153950653450).

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

131561671670 is a wasteful number, since it uses less digits than its factorization.

131561671670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The spelling of 131561671670 in words is "one hundred thirty-one billion, five hundred sixty-one million, six hundred seventy-one thousand, six hundred seventy".