42561633252 has 24 divisors (see below), whose sum is σ = 101184261696. Its totient is φ = 13919527648.

The previous prime is 42561633223. The next prime is 42561633287. The reversal of 42561633252 is 25233616524.

It is a super-2 number, since 2×42561633252² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42561633252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33459768 + ... + 33461039.

It is an arithmetic number, because the mean of its divisors is an integer number (4216010904).

Almost surely, 2^42561633252 is an apocalyptic number.

It is an amenable number.

42561633252 is an abundant number, since it is smaller than the sum of its proper divisors (58622628444).

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

42561633252 is a wasteful number, since it uses less digits than its factorization.

42561633252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66920867 (or 66920865 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The spelling of 42561633252 in words is "forty-two billion, five hundred sixty-one million, six hundred thirty-three thousand, two hundred fifty-two".