131871341664 has 72 divisors (see below), whose sum is σ = 378650078352. Its totient is φ = 43530336000.

The previous prime is 131871341629. The next prime is 131871341671. The reversal of 131871341664 is 466143178131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2193087 + ... + 2252414.

It is an arithmetic number, because the mean of its divisors is an integer number (5259028866).

Almost surely, 2^131871341664 is an apocalyptic number.

It is an amenable number.

131871341664 is an abundant number, since it is smaller than the sum of its proper divisors (246778736688).

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

131871341664 is a wasteful number, since it uses less digits than its factorization.

131871341664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445620 (or 4445609 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 131871341664 in words is "one hundred thirty-one billion, eight hundred seventy-one million, three hundred forty-one thousand, six hundred sixty-four".