131793263499 has 4 divisors (see below), whose sum is σ = 175724351336. Its totient is φ = 87862175664.

The previous prime is 131793263477. The next prime is 131793263509. The reversal of 131793263499 is 994362397131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131793263499 - 2⁵ = 131793263467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131793263599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21965543914 + ... + 21965543919.

It is an arithmetic number, because the mean of its divisors is an integer number (43931087834).

Almost surely, 2^131793263499 is an apocalyptic number.

131793263499 is a deficient number, since it is larger than the sum of its proper divisors (43931087837).

131793263499 is an equidigital number, since it uses as much as digits as its factorization.

131793263499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43931087836.

The product of its digits is 6613488, while the sum is 57.

The spelling of 131793263499 in words is "one hundred thirty-one billion, seven hundred ninety-three million, two hundred sixty-three thousand, four hundred ninety-nine".