7709890650 has 384 divisors, whose sum is σ = 25081823232. Its totient is φ = 1520640000.

The previous prime is 7709890649. The next prime is 7709890679. The reversal of 7709890650 is 560989077.

It is a junction number, because it is equal to n+sod(n) for n = 7709890593 and 7709890602.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 21840874 + ... + 21841226.

It is an arithmetic number, because the mean of its divisors is an integer number (65317248).

Almost surely, 2^7709890650 is an apocalyptic number.

7709890650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7709890650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12540911616).

7709890650 is an abundant number, since it is smaller than the sum of its proper divisors (17371932582).

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

7709890650 is a wasteful number, since it uses less digits than its factorization.

7709890650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 7709890650 is about 87805.9829966045. The cubic root of 7709890650 is about 1975.5259529642.

The spelling of 7709890650 in words is "seven billion, seven hundred nine million, eight hundred ninety thousand, six hundred fifty".