7795775988 has 540 divisors, whose sum is σ = 28168021728. Its totient is φ = 1825649280.

The previous prime is 7795775951. The next prime is 7795776047. The reversal of 7795775988 is 8895775977.

It is a happy number.

It is a super-2 number, since 2×7795775988² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 181297095 + ... + 181297137.

Almost surely, 2^7795775988 is an apocalyptic number.

7795775988 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7795775988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14084010864).

7795775988 is an abundant number, since it is smaller than the sum of its proper divisors (20372245740).

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

7795775988 is a wasteful number, since it uses less digits than its factorization.

7795775988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 79 counting only the distinct ones).

The product of its digits is 311169600, while the sum is 72.

The square root of 7795775988 is about 88293.6916659395. The cubic root of 7795775988 is about 1982.8344253532.

The spelling of 7795775988 in words is "seven billion, seven hundred ninety-five million, seven hundred seventy-five thousand, nine hundred eighty-eight".