2551644013808 has 40 divisors (see below), whose sum is σ = 4957790597760. Its totient is φ = 1272219284160.

The previous prime is 2551644013801. The next prime is 2551644013811. The reversal of 2551644013808 is 8083104461552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551644013801) 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 7 ways as a sum of consecutive naturals, for example, 7878983 + ... + 8196441.

It is an arithmetic number, because the mean of its divisors is an integer number (123944764944).

Almost surely, 2^{2551644013808} is an apocalyptic number.

It is an amenable number.

2551644013808 is a deficient number, since it is larger than the sum of its proper divisors (2406146583952).

2551644013808 is a wasteful number, since it uses less digits than its factorization.

2551644013808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318885 (or 318879 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 2551644013808 in words is "two trillion, five hundred fifty-one billion, six hundred forty-four million, thirteen thousand, eight hundred eight".