7988011258249 has 27 divisors (see below), whose sum is σ = 9267334290669. Its totient is φ = 6879118185720.

The previous prime is 7988011258243. The next prime is 7988011258321. The reversal of 7988011258249 is 9428521108897.

The square root of 7988011258249 is 2826307.

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

It is not a de Polignac number, because 7988011258249 - 2²⁹ = 7987474387337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7988011258243) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 590691402 + ... + 590704924.

Almost surely, 2^{7988011258249} is an apocalyptic number.

7988011258249 is the 2826307-th square number.

7988011258249 is the 1413154-th centered octagonal number.

It is an amenable number.

7988011258249 is a deficient number, since it is larger than the sum of its proper divisors (1279323032420).

7988011258249 is an frugal number, since it uses more digits than its factorization.

7988011258249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27106 (or 13553 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 64.

Multiplying 7988011258249 by its sum of digits (64), we get a square (511232720527936 = 22610456²).

The spelling of 7988011258249 in words is "seven trillion, nine hundred eighty-eight billion, eleven million, two hundred fifty-eight thousand, two hundred forty-nine".