2659656040 has 32 divisors (see below), whose sum is σ = 5985711360. Its totient is φ = 1063598400.

The previous prime is 2659656031. The next prime is 2659656047. The reversal of 2659656040 is 406569562.

It is a super-2 number, since 2×2659656040² = 14147540502216963200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2659656047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274885 + ... + 284395.

It is an arithmetic number, because the mean of its divisors is an integer number (187053480).

Almost surely, 2^2659656040 is an apocalyptic number.

2659656040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2659656040 is an abundant number, since it is smaller than the sum of its proper divisors (3326055320).

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

2659656040 is a wasteful number, since it uses less digits than its factorization.

2659656040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16513 (or 16509 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 2659656040 is about 51571.8531759331. The cubic root of 2659656040 is about 1385.5062579478.

The spelling of 2659656040 in words is "two billion, six hundred fifty-nine million, six hundred fifty-six thousand, forty".