7659990156 has 192 divisors, whose sum is σ = 22443373568. Its totient is φ = 1979707392.

The previous prime is 7659990133. The next prime is 7659990193. The reversal of 7659990156 is 6510999567.

7659990156 is nontrivially palindromic in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 7659990096 and 7659990105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24472656 + ... + 24472968.

Almost surely, 2^7659990156 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 7659990156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11221686784).

7659990156 is an abundant number, since it is smaller than the sum of its proper divisors (14783383412).

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

7659990156 is a wasteful number, since it uses less digits than its factorization.

7659990156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 57.

The square root of 7659990156 is about 87521.3697104884. The cubic root of 7659990156 is about 1971.2546789309.

The spelling of 7659990156 in words is "seven billion, six hundred fifty-nine million, nine hundred ninety thousand, one hundred fifty-six".