2635664516 has 24 divisors (see below), whose sum is σ = 4768425984. Its totient is φ = 1273386240.

The previous prime is 2635664501. The next prime is 2635664519. The reversal of 2635664516 is 6154665362.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2635664519) 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, 67661 + ... + 99243.

It is an arithmetic number, because the mean of its divisors is an integer number (198684416).

Almost surely, 2^2635664516 is an apocalyptic number.

It is an amenable number.

2635664516 is a deficient number, since it is larger than the sum of its proper divisors (2132761468).

2635664516 is a wasteful number, since it uses less digits than its factorization.

2635664516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32291 (or 32289 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The square root of 2635664516 is about 51338.7233577151. The cubic root of 2635664516 is about 1381.3276650746.

The spelling of 2635664516 in words is "two billion, six hundred thirty-five million, six hundred sixty-four thousand, five hundred sixteen".