131569953593 has 4 divisors (see below), whose sum is σ = 141690719268. Its totient is φ = 121449187920.

The previous prime is 131569953539. The next prime is 131569953607. The reversal of 131569953593 is 395359965131.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5433458944 + 126136494649 = 73712^2 + 355157^2 .

It is a cyclic number.

It is not a de Polignac number, because 131569953593 - 2¹⁴ = 131569937209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131569956593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5060382818 + ... + 5060382843.

It is an arithmetic number, because the mean of its divisors is an integer number (35422679817).

Almost surely, 2^131569953593 is an apocalyptic number.

131569953593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131569953593 is a deficient number, since it is larger than the sum of its proper divisors (10120765675).

131569953593 is a wasteful number, since it uses less digits than its factorization.

131569953593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120765674.

The product of its digits is 14762250, while the sum is 59.

The spelling of 131569953593 in words is "one hundred thirty-one billion, five hundred sixty-nine million, nine hundred fifty-three thousand, five hundred ninety-three".