131801938641 has 32 divisors (see below), whose sum is σ = 206727312000. Its totient is φ = 82762098624.

The previous prime is 131801938613. The next prime is 131801938687. The reversal of 131801938641 is 146839108131.

It is not a de Polignac number, because 131801938641 - 2⁶ = 131801938577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131801938141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 653806 + ... + 831303.

It is an arithmetic number, because the mean of its divisors is an integer number (6460228500).

Almost surely, 2^131801938641 is an apocalyptic number.

It is an amenable number.

131801938641 is a deficient number, since it is larger than the sum of its proper divisors (74925373359).

131801938641 is a wasteful number, since it uses less digits than its factorization.

131801938641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485310 (or 1485304 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 131801938641 in words is "one hundred thirty-one billion, eight hundred one million, nine hundred thirty-eight thousand, six hundred forty-one".