2655564040 has 64 divisors (see below), whose sum is σ = 6104289600. Its totient is φ = 1039411968.

The previous prime is 2655563983. The next prime is 2655564077. The reversal of 2655564040 is 404655562.

It is a super-2 number, since 2×2655564040² = 14104040741082243200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 533242 + ... + 538198.

It is an arithmetic number, because the mean of its divisors is an integer number (95379525).

Almost surely, 2^2655564040 is an apocalyptic number.

2655564040 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 2655564040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3052144800).

2655564040 is an abundant number, since it is smaller than the sum of its proper divisors (3448725560).

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

2655564040 is a wasteful number, since it uses less digits than its factorization.

2655564040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5254 (or 5250 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 2655564040 is about 51532.1651010318. The cubic root of 2655564040 is about 1384.7953387413.

The spelling of 2655564040 in words is "two billion, six hundred fifty-five million, five hundred sixty-four thousand, forty".