2556016117 has 4 divisors (see below), whose sum is σ = 2592016416. Its totient is φ = 2520015820.

The previous prime is 2556016103. The next prime is 2556016153. The reversal of 2556016117 is 7116106552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2556016117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556016417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18000043 + ... + 18000184.

It is an arithmetic number, because the mean of its divisors is an integer number (648004104).

Almost surely, 2^2556016117 is an apocalyptic number.

It is an amenable number.

2556016117 is a deficient number, since it is larger than the sum of its proper divisors (36000299).

2556016117 is an equidigital number, since it uses as much as digits as its factorization.

2556016117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36000298.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 2556016117 is about 50557.0580334734. The cubic root of 2556016117 is about 1367.2707697411.

The spelling of 2556016117 in words is "two billion, five hundred fifty-six million, sixteen thousand, one hundred seventeen".