131921145775 has 48 divisors (see below), whose sum is σ = 167876246304. Its totient is φ = 102808442880.

The previous prime is 131921145751. The next prime is 131921145787. The reversal of 131921145775 is 577541129131.

It is a happy number.

It is not a de Polignac number, because 131921145775 - 2⁹ = 131921145263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61272099 + ... + 61274251.

It is an arithmetic number, because the mean of its divisors is an integer number (3497421798).

Almost surely, 2^131921145775 is an apocalyptic number.

131921145775 is a deficient number, since it is larger than the sum of its proper divisors (35955100529).

131921145775 is a wasteful number, since it uses less digits than its factorization.

131921145775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620 (or 2615 counting only the distinct ones).

The product of its digits is 264600, while the sum is 46.

The spelling of 131921145775 in words is "one hundred thirty-one billion, nine hundred twenty-one million, one hundred forty-five thousand, seven hundred seventy-five".