131383768720 has 80 divisors (see below), whose sum is σ = 309524117760. Its totient is φ = 51856376832.

The previous prime is 131383768699. The next prime is 131383768727. The reversal of 131383768720 is 27867383131.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (131383768727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12084727 + ... + 12095593.

It is an arithmetic number, because the mean of its divisors is an integer number (3869051472).

Almost surely, 2^131383768720 is an apocalyptic number.

131383768720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131383768720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154762058880).

131383768720 is an abundant number, since it is smaller than the sum of its proper divisors (178140349040).

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

131383768720 is a wasteful number, since it uses less digits than its factorization.

131383768720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12872 (or 12866 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 131383768720 in words is "one hundred thirty-one billion, three hundred eighty-three million, seven hundred sixty-eight thousand, seven hundred twenty".