42651588564 has 36 divisors (see below), whose sum is σ = 116107103476. Its totient is φ = 13123565568.

The previous prime is 42651588517. The next prime is 42651588593. The reversal of 42651588564 is 46588515624.

42651588564 is a `hidden beast` number, since 4 + 2 + 6 + 5 + 1 + 588 + 56 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21577259664 + 21074328900 = 146892^2 + 145170^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 42651588564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45567469 + ... + 45568404.

Almost surely, 2^42651588564 is an apocalyptic number.

It is an amenable number.

42651588564 is an abundant number, since it is smaller than the sum of its proper divisors (73455514912).

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

42651588564 is a wasteful number, since it uses less digits than its factorization.

42651588564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91135896 (or 91135891 counting only the distinct ones).

The product of its digits is 9216000, while the sum is 54.

The spelling of 42651588564 in words is "forty-two billion, six hundred fifty-one million, five hundred eighty-eight thousand, five hundred sixty-four".