131816797672 has 24 divisors (see below), whose sum is σ = 287508577410. Its totient is φ = 56492913120.

The previous prime is 131816797663. The next prime is 131816797729. The reversal of 131816797672 is 276797618131.

It can be written as a sum of positive squares in only one way, i.e., 89584081636 + 42232716036 = 299306^2 + 205506^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168133279 + ... + 168134062.

Almost surely, 2^131816797672 is an apocalyptic number.

It is an amenable number.

131816797672 is an abundant number, since it is smaller than the sum of its proper divisors (155691779738).

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

131816797672 is a wasteful number, since it uses less digits than its factorization.

131816797672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336267361 (or 336267350 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 58.

The spelling of 131816797672 in words is "one hundred thirty-one billion, eight hundred sixteen million, seven hundred ninety-seven thousand, six hundred seventy-two".