2556815800001 has 8 divisors (see below), whose sum is σ = 2645003208000. Its totient is φ = 2468629815120.

The previous prime is 2556815799971. The next prime is 2556815800061. The reversal of 2556815800001 is 1000085186552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2556815800001 - 2¹⁴ = 2556815783617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2556815800061) 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, 4358306 + ... + 4910036.

It is an arithmetic number, because the mean of its divisors is an integer number (330625401000).

Almost surely, 2^{2556815800001} is an apocalyptic number.

It is an amenable number.

2556815800001 is a deficient number, since it is larger than the sum of its proper divisors (88187407999).

2556815800001 is a wasteful number, since it uses less digits than its factorization.

2556815800001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711559.

The product of its (nonzero) digits is 96000, while the sum is 41.

The spelling of 2556815800001 in words is "two trillion, five hundred fifty-six billion, eight hundred fifteen million, eight hundred thousand, one".