131986378475 has 48 divisors (see below), whose sum is σ = 188021590848. Its totient is φ = 90032701440.

The previous prime is 131986378463. The next prime is 131986378541. The reversal of 131986378475 is 574873689131.

It is a happy number.

It is not a de Polignac number, because 131986378475 - 2⁶ = 131986378411 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

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, 45558227 + ... + 45561123.

It is an arithmetic number, because the mean of its divisors is an integer number (3917116476).

Almost surely, 2^131986378475 is an apocalyptic number.

131986378475 is a deficient number, since it is larger than the sum of its proper divisors (56035212373).

131986378475 is a wasteful number, since it uses less digits than its factorization.

131986378475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184 (or 4179 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 62.

The spelling of 131986378475 in words is "one hundred thirty-one billion, nine hundred eighty-six million, three hundred seventy-eight thousand, four hundred seventy-five".