131507664500 has 48 divisors (see below), whose sum is σ = 287702670528. Its totient is φ = 52513335200.

The previous prime is 131507664487. The next prime is 131507664539. The reversal of 131507664500 is 5466705131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69467 + ... + 517533.

It is an arithmetic number, because the mean of its divisors is an integer number (5993805636).

Almost surely, 2^131507664500 is an apocalyptic number.

131507664500 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 131507664500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143851335264).

131507664500 is an abundant number, since it is smaller than the sum of its proper divisors (156195006028).

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

131507664500 is a wasteful number, since it uses less digits than its factorization.

131507664500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448673 (or 448661 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 131507664500 in words is "one hundred thirty-one billion, five hundred seven million, six hundred sixty-four thousand, five hundred".