7997742688 has 48 divisors (see below), whose sum is σ = 17351134416. Its totient is φ = 3605414400.

The previous prime is 7997742677. The next prime is 7997742703. The reversal of 7997742688 is 8862477997.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 205663 + ... + 241438.

It is an arithmetic number, because the mean of its divisors is an integer number (361481967).

Almost surely, 2^7997742688 is an apocalyptic number.

It is an amenable number.

7997742688 is an abundant number, since it is smaller than the sum of its proper divisors (9353391728).

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

7997742688 is a wasteful number, since it uses less digits than its factorization.

7997742688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447167 (or 447159 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 67.

The square root of 7997742688 is about 89430.0994520301. The cubic root of 7997742688 is about 1999.8118729713.

The spelling of 7997742688 in words is "seven billion, nine hundred ninety-seven million, seven hundred forty-two thousand, six hundred eighty-eight".