2556440355131 has 8 divisors (see below), whose sum is σ = 2757928091520. Its totient is φ = 2355643829952.

The previous prime is 2556440355121. The next prime is 2556440355187. The reversal of 2556440355131 is 1315530446552.

It is a happy number.

2556440355131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2556440355131 is a prime.

It is a super-2 number, since 2×2556440355131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556440355121) 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, 172795115 + ... + 172809908.

It is an arithmetic number, because the mean of its divisors is an integer number (344741011440).

Almost surely, 2^{2556440355131} is an apocalyptic number.

2556440355131 is a deficient number, since it is larger than the sum of its proper divisors (201487736389).

2556440355131 is a wasteful number, since it uses less digits than its factorization.

2556440355131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345605605.

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 2556440355131 in words is "two trillion, five hundred fifty-six billion, four hundred forty million, three hundred fifty-five thousand, one hundred thirty-one".