42855740631 has 32 divisors (see below), whose sum is σ = 69447671040. Its totient is φ = 25903476000.

The previous prime is 42855740617. The next prime is 42855740677. The reversal of 42855740631 is 13604755824.

42855740631 is a `hidden beast` number, since 4 + 2 + 8 + 5 + 5 + 7 + 4 + 0 + 631 = 666.

It is not a de Polignac number, because 42855740631 - 2⁹ = 42855740119 is a prime.

It is a super-2 number, since 2×42855740631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42855740531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82645 + ... + 304206.

It is an arithmetic number, because the mean of its divisors is an integer number (2170239720).

Almost surely, 2^42855740631 is an apocalyptic number.

42855740631 is a deficient number, since it is larger than the sum of its proper divisors (26591930409).

42855740631 is a wasteful number, since it uses less digits than its factorization.

42855740631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387244 (or 387238 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 42855740631 in words is "forty-two billion, eight hundred fifty-five million, seven hundred forty thousand, six hundred thirty-one".