2650815720 has 480 divisors, whose sum is σ = 10577239200. Its totient is φ = 593526528.

The previous prime is 2650815719. The next prime is 2650815749. The reversal of 2650815720 is 275180562.

It is a happy number.

2650815720 is a `hidden beast` number, since 2 + 6 + 5 + 0 + 81 + 572 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 119 ways as a sum of consecutive naturals, for example, 9366699 + ... + 9366981.

It is an arithmetic number, because the mean of its divisors is an integer number (22035915).

Almost surely, 2^2650815720 is an apocalyptic number.

2650815720 is a gapful number since it is divisible by the number (20) 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 2650815720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5288619600).

2650815720 is an abundant number, since it is smaller than the sum of its proper divisors (7926423480).

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

2650815720 is a wasteful number, since it uses less digits than its factorization.

2650815720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 2650815720 is about 51486.0730683551. The cubic root of 2650815720 is about 1383.9694784831.

The spelling of 2650815720 in words is "two billion, six hundred fifty million, eight hundred fifteen thousand, seven hundred twenty".