2640545700 has 288 divisors, whose sum is σ = 8755272960. Its totient is φ = 609638400.

The previous prime is 2640545641. The next prime is 2640545731. The reversal of 2640545700 is 75450462.

2640545700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4184385 + ... + 4185015.

Almost surely, 2^2640545700 is an apocalyptic number.

2640545700 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 2640545700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4377636480).

2640545700 is an abundant number, since it is smaller than the sum of its proper divisors (6114727260).

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

2640545700 is a wasteful number, since it uses less digits than its factorization.

2640545700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 2640545700 is about 51386.2403761941. The cubic root of 2640545700 is about 1382.1798671678.

The spelling of 2640545700 in words is "two billion, six hundred forty million, five hundred forty-five thousand, seven hundred".