7888523664 has 160 divisors (see below), whose sum is σ = 24853012480. Its totient is φ = 2105865216.

The previous prime is 7888523623. The next prime is 7888523681. The reversal of 7888523664 is 4663258887.

It is a happy number.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457569 + ... + 474495.

It is an arithmetic number, because the mean of its divisors is an integer number (155331328).

Almost surely, 2^7888523664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7888523664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12426506240).

7888523664 is an abundant number, since it is smaller than the sum of its proper divisors (16964488816).

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

7888523664 is a wasteful number, since it uses less digits than its factorization.

7888523664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17037 (or 17031 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 57.

The square root of 7888523664 is about 88817.3612758226. The cubic root of 7888523664 is about 1990.6668189488. Note that the first 3 decimals are identical.

The spelling of 7888523664 in words is "seven billion, eight hundred eighty-eight million, five hundred twenty-three thousand, six hundred sixty-four".