131665254422 has 32 divisors (see below), whose sum is σ = 225244024992. Its totient is φ = 57183081984.

The previous prime is 131665254421. The next prime is 131665254451. The reversal of 131665254422 is 224452566131.

It is a self number, because there is not a number n which added to its sum of digits gives 131665254422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131665254421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2567828 + ... + 2618600.

It is an arithmetic number, because the mean of its divisors is an integer number (7038875781).

Almost surely, 2^131665254422 is an apocalyptic number.

131665254422 is a deficient number, since it is larger than the sum of its proper divisors (93578770570).

131665254422 is a wasteful number, since it uses less digits than its factorization.

131665254422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56672.

The product of its digits is 345600, while the sum is 41.

The spelling of 131665254422 in words is "one hundred thirty-one billion, six hundred sixty-five million, two hundred fifty-four thousand, four hundred twenty-two".