7988695650 has 144 divisors (see below), whose sum is σ = 23154768000. Its totient is φ = 1962979200.

The previous prime is 7988695633. The next prime is 7988695699. The reversal of 7988695650 is 565968897.

7988695650 is a `hidden beast` number, since 7 + 9 + 8 + 8 + 69 + 565 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5328601 + ... + 5330099.

It is an arithmetic number, because the mean of its divisors is an integer number (160797000).

Almost surely, 2^7988695650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7988695650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11577384000).

7988695650 is an abundant number, since it is smaller than the sum of its proper divisors (15166072350).

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

7988695650 is a wasteful number, since it uses less digits than its factorization.

7988695650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 63.

The square root of 7988695650 is about 89379.5035228995. The cubic root of 7988695650 is about 1999.0575267752.

The spelling of 7988695650 in words is "seven billion, nine hundred eighty-eight million, six hundred ninety-five thousand, six hundred fifty".