15072445530 has 24 divisors (see below), whose sum is σ = 39188358612. Its totient is φ = 4019318784.

The previous prime is 15072445517. The next prime is 15072445559. The reversal of 15072445530 is 3554427051.

15072445530 is a `hidden beast` number, since 1 + 50 + 72 + 4 + 4 + 5 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14872534209 + 199911321 = 121953^2 + 14139^2 .

It is a super-2 number, since 2×15072445530² (a number of 21 digits) contains 22 as substring.

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, 83735719 + ... + 83735898.

Almost surely, 2^15072445530 is an apocalyptic number.

15072445530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15072445530 is an abundant number, since it is smaller than the sum of its proper divisors (24115913082).

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

15072445530 is a wasteful number, since it uses less digits than its factorization.

15072445530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167471630 (or 167471627 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The spelling of 15072445530 in words is "fifteen billion, seventy-two million, four hundred forty-five thousand, five hundred thirty".