7994987550 has 120 divisors (see below), whose sum is σ = 24233830632. Its totient is φ = 1938168000.

The previous prime is 7994987543. The next prime is 7994987653. The reversal of 7994987550 is 557894997.

7994987550 is a `hidden beast` number, since 7 + 99 + 498 + 7 + 5 + 50 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 45181 + ... + 134280.

Almost surely, 2^7994987550 is an apocalyptic number.

7994987550 is an abundant number, since it is smaller than the sum of its proper divisors (16238843082).

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

7994987550 is a wasteful number, since it uses less digits than its factorization.

7994987550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179496 (or 179482 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 63.

The square root of 7994987550 is about 89414.6942621849. The cubic root of 7994987550 is about 1999.5822085646.

The spelling of 7994987550 in words is "seven billion, nine hundred ninety-four million, nine hundred eighty-seven thousand, five hundred fifty".