2650640880 has 40 divisors (see below), whose sum is σ = 8216987472. Its totient is φ = 706837504.

The previous prime is 2650640851. The next prime is 2650640899. The reversal of 2650640880 is 880460562.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5521929 + ... + 5522408.

Almost surely, 2^2650640880 is an apocalyptic number.

2650640880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2650640880 is an abundant number, since it is smaller than the sum of its proper divisors (5566346592).

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

2650640880 is a wasteful number, since it uses less digits than its factorization.

2650640880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11044353 (or 11044347 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 2650640880 is about 51484.3751054628. The cubic root of 2650640880 is about 1383.9390502968.

The spelling of 2650640880 in words is "two billion, six hundred fifty million, six hundred forty thousand, eight hundred eighty".