42455647631 has 4 divisors (see below), whose sum is σ = 42692830200. Its totient is φ = 42218465064.

The previous prime is 42455647613. The next prime is 42455647693. The reversal of 42455647631 is 13674655424.

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

It is a cyclic number.

It is not a de Polignac number, because 42455647631 - 2²⁶ = 42388538767 is a prime.

It is a super-2 number, since 2×42455647631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42455644631) 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, 118591016 + ... + 118591373.

It is an arithmetic number, because the mean of its divisors is an integer number (10673207550).

Almost surely, 2^42455647631 is an apocalyptic number.

42455647631 is a deficient number, since it is larger than the sum of its proper divisors (237182569).

42455647631 is a wasteful number, since it uses less digits than its factorization.

42455647631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237182568.

The product of its digits is 2419200, while the sum is 47.

The spelling of 42455647631 in words is "forty-two billion, four hundred fifty-five million, six hundred forty-seven thousand, six hundred thirty-one".