7688977650 has 240 divisors, whose sum is σ = 22028962824. Its totient is φ = 1987614720.

The previous prime is 7688977633. The next prime is 7688977661. The reversal of 7688977650 is 567798867.

It can be written as a sum of positive squares in 12 ways, for example, as 414081801 + 7274895849 = 20349^2 + 85293^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 24255292 + ... + 24255608.

Almost surely, 2^7688977650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7688977650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11014481412).

7688977650 is an abundant number, since it is smaller than the sum of its proper divisors (14339985174).

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

7688977650 is a wasteful number, since it uses less digits than its factorization.

7688977650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 35562240, while the sum is 63.

The square root of 7688977650 is about 87686.8157136522. The cubic root of 7688977650 is about 1973.7381374908.

The spelling of 7688977650 in words is "seven billion, six hundred eighty-eight million, nine hundred seventy-seven thousand, six hundred fifty".