131885172816 has 40 divisors (see below), whose sum is σ = 340937062560. Its totient is φ = 43931569536.

The previous prime is 131885172787. The next prime is 131885172823. The reversal of 131885172816 is 618271588131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871575 + ... + 1011638.

It is an arithmetic number, because the mean of its divisors is an integer number (8523426564).

Almost surely, 2^131885172816 is an apocalyptic number.

131885172816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131885172816 is an abundant number, since it is smaller than the sum of its proper divisors (209051889744).

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

131885172816 is a wasteful number, since it uses less digits than its factorization.

131885172816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884683 (or 1884677 counting only the distinct ones).

The product of its digits is 645120, while the sum is 51.

The spelling of 131885172816 in words is "one hundred thirty-one billion, eight hundred eighty-five million, one hundred seventy-two thousand, eight hundred sixteen".