7997911488 has 280 divisors, whose sum is σ = 27236716672. Its totient is φ = 2282598144.

The previous prime is 7997911423. The next prime is 7997911489. The reversal of 7997911488 is 8841197997.

It is a happy number.

7997911488 is a `hidden beast` number, since 79 + 9 + 79 + 11 + 488 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7997911489) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 8817531 + ... + 8818437.

Almost surely, 2^7997911488 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 7997911488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13618358336).

7997911488 is an abundant number, since it is smaller than the sum of its proper divisors (19238805184).

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

7997911488 is an frugal number, since it uses more digits than its factorization.

7997911488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953 (or 919 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 63.

The square root of 7997911488 is about 89431.0432008931. The cubic root of 7997911488 is about 1999.8259421857.

The spelling of 7997911488 in words is "seven billion, nine hundred ninety-seven million, nine hundred eleven thousand, four hundred eighty-eight".