715287988009 has 27 divisors (see below), whose sum is σ = 878305864797. Its totient is φ = 580744018008.

The previous prime is 715287987961. The next prime is 715287988021. The reversal of 715287988009 is 900889782517.

The square root of 715287988009 is 845747.

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

It is not a de Polignac number, because 715287988009 - 2¹⁷ = 715287856937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (715287988099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 112481172 + ... + 112487530.

Almost surely, 2^715287988009 is an apocalyptic number.

715287988009 is the 845747-th square number.

715287988009 is the 422874-th centered octagonal number.

It is an amenable number.

715287988009 is a deficient number, since it is larger than the sum of its proper divisors (163017876788).

715287988009 is an frugal number, since it uses more digits than its factorization.

715287988009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12770 (or 6385 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 64.

Multiplying 715287988009 by its sum of digits (64), we get a square (45778431232576 = 6765976²).

The spelling of 715287988009 in words is "seven hundred fifteen billion, two hundred eighty-seven million, nine hundred eighty-eight thousand, nine".