2656640502 has 24 divisors (see below), whose sum is σ = 5878525536. Its totient is φ = 866705136.

The previous prime is 2656640501. The next prime is 2656640513. The reversal of 2656640502 is 2050466562.

2656640502 is a `hidden beast` number, since 2 + 6 + 5 + 6 + 640 + 5 + 0 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656640501) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1569273 + ... + 1570964.

It is an arithmetic number, because the mean of its divisors is an integer number (244938564).

Almost surely, 2^2656640502 is an apocalyptic number.

2656640502 is an abundant number, since it is smaller than the sum of its proper divisors (3221885034).

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

2656640502 is a wasteful number, since it uses less digits than its factorization.

2656640502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140292 (or 3140289 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2656640502 is about 51542.6086068604. The cubic root of 2656640502 is about 1384.9824274554.

The spelling of 2656640502 in words is "two billion, six hundred fifty-six million, six hundred forty thousand, five hundred two".