15135888784 has 15 divisors (see below), whose sum is σ = 29326738017. Its totient is φ = 7567698336.

The previous prime is 15135888773. The next prime is 15135888799. The reversal of 15135888784 is 48788853151.

The square root of 15135888784 is 123028.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6275808400 + 8860080384 = 79220^2 + 94128^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 476734 + ... + 507490.

Almost surely, 2^15135888784 is an apocalyptic number.

15135888784 is the 123028-th square number.

It is an amenable number.

15135888784 is a deficient number, since it is larger than the sum of its proper divisors (14190849233).

15135888784 is an frugal number, since it uses more digits than its factorization.

15135888784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61522 (or 30759 counting only the distinct ones).

The product of its digits is 8601600, while the sum is 58.

The spelling of 15135888784 in words is "fifteen billion, one hundred thirty-five million, eight hundred eighty-eight thousand, seven hundred eighty-four".