2636920436864 has 64 divisors (see below), whose sum is σ = 6019137259200. Its totient is φ = 1127203445760.

The previous prime is 2636920436833. The next prime is 2636920436911. The reversal of 2636920436864 is 4686340296362.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×2636920436864² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3434222 + ... + 4131309.

It is an arithmetic number, because the mean of its divisors is an integer number (94049019675).

Almost surely, 2^{2636920436864} is an apocalyptic number.

It is an amenable number.

2636920436864 is an abundant number, since it is smaller than the sum of its proper divisors (3382216822336).

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

2636920436864 is an equidigital number, since it uses as much as digits as its factorization.

2636920436864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7565941 (or 7565929 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 59.

The spelling of 2636920436864 in words is "two trillion, six hundred thirty-six billion, nine hundred twenty million, four hundred thirty-six thousand, eight hundred sixty-four".