42536261631 has 4 divisors (see below), whose sum is σ = 56715015512. Its totient is φ = 28357507752.

The previous prime is 42536261623. The next prime is 42536261639. The reversal of 42536261631 is 13616263524.

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

It is an interprime number because it is at equal distance from previous prime (42536261623) and next prime (42536261639).

It is not a de Polignac number, because 42536261631 - 2³ = 42536261623 is a prime.

It is a super-2 number, since 2×42536261631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42536261631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42536261639) 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, 7089376936 + ... + 7089376941.

It is an arithmetic number, because the mean of its divisors is an integer number (14178753878).

Almost surely, 2^42536261631 is an apocalyptic number.

42536261631 is a deficient number, since it is larger than the sum of its proper divisors (14178753881).

42536261631 is a wasteful number, since it uses less digits than its factorization.

42536261631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14178753880.

The product of its digits is 155520, while the sum is 39.

The spelling of 42536261631 in words is "forty-two billion, five hundred thirty-six million, two hundred sixty-one thousand, six hundred thirty-one".