42641513631 has 12 divisors (see below), whose sum is σ = 61610747640. Its totient is φ = 28419621840.

The previous prime is 42641513587. The next prime is 42641513683. The reversal of 42641513631 is 13631514624.

42641513631 is a `hidden beast` number, since 4 + 2 + 6 + 4 + 1 + 5 + 13 + 631 = 666.

It is not a de Polignac number, because 42641513631 - 2¹⁴ = 42641497247 is a prime.

It is a super-2 number, since 2×42641513631² (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 (42643513631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 637540 + ... + 701241.

It is an arithmetic number, because the mean of its divisors is an integer number (5134228970).

Almost surely, 2^42641513631 is an apocalyptic number.

42641513631 is a deficient number, since it is larger than the sum of its proper divisors (18969234009).

42641513631 is a wasteful number, since it uses less digits than its factorization.

42641513631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342326 (or 1342323 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 42641513631 in words is "forty-two billion, six hundred forty-one million, five hundred thirteen thousand, six hundred thirty-one".