15858974052 has 18 divisors (see below), whose sum is σ = 40087962278. Its totient is φ = 5286324672.

The previous prime is 15858974029. The next prime is 15858974057. The reversal of 15858974052 is 25047985851.

15858974052 is a `hidden beast` number, since 1 + 5 + 8 + 589 + 7 + 4 + 0 + 52 = 666.

15858974052 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., 14365460736 + 1493513316 = 119856^2 + 38646^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-5 number, since 5×15858974052⁵ (a number of 52 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15858974052.

It is not an unprimeable number, because it can be changed into a prime (15858974057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 220263493 + ... + 220263564.

Almost surely, 2^15858974052 is an apocalyptic number.

15858974052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15858974052 is an abundant number, since it is smaller than the sum of its proper divisors (24228988226).

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

15858974052 is a wasteful number, since it uses less digits than its factorization.

15858974052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440527067 (or 440527062 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 54.

The spelling of 15858974052 in words is "fifteen billion, eight hundred fifty-eight million, nine hundred seventy-four thousand, fifty-two".