2800555013256 has 384 divisors, whose sum is σ = 9573456614400. Its totient is φ = 671102046720.

The previous prime is 2800555013251. The next prime is 2800555013293. The reversal of 2800555013256 is 6523105550082.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2800555013251) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 447155581 + ... + 447161843.

It is an arithmetic number, because the mean of its divisors is an integer number (24930876600).

Almost surely, 2^{2800555013256} is an apocalyptic number.

2800555013256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2800555013256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4786728307200).

2800555013256 is an abundant number, since it is smaller than the sum of its proper divisors (6772901601144).

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

2800555013256 is a wasteful number, since it uses less digits than its factorization.

2800555013256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8969 (or 8958 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 2800555013256 in words is "two trillion, eight hundred billion, five hundred fifty-five million, thirteen thousand, two hundred fifty-six".