42631581524 has 18 divisors (see below), whose sum is σ = 86785719930. Its totient is φ = 18270677712.

The previous prime is 42631581497. The next prime is 42631581533. The reversal of 42631581524 is 42518513624.

42631581524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 40248384400 + 2383197124 = 200620^2 + 48818^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108753839 + ... + 108754230.

It is an arithmetic number, because the mean of its divisors is an integer number (4821428885).

Almost surely, 2^42631581524 is an apocalyptic number.

It is an amenable number.

42631581524 is an abundant number, since it is smaller than the sum of its proper divisors (44154138406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42631581524 is a wasteful number, since it uses less digits than its factorization.

42631581524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217508087 (or 217508078 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The spelling of 42631581524 in words is "forty-two billion, six hundred thirty-one million, five hundred eighty-one thousand, five hundred twenty-four".