2556338056887 has 8 divisors (see below), whose sum is σ = 3408486354304. Its totient is φ = 1704207565368.

The previous prime is 2556338056849. The next prime is 2556338056913. The reversal of 2556338056887 is 7886508336552.

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

It is not a de Polignac number, because 2556338056887 - 2¹¹ = 2556338054839 is a prime.

It is a super-2 number, since 2×2556338056887² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556338056817) 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, 4112803 + ... + 4693380.

It is an arithmetic number, because the mean of its divisors is an integer number (426060794288).

Almost surely, 2^{2556338056887} is an apocalyptic number.

2556338056887 is a deficient number, since it is larger than the sum of its proper divisors (852148297417).

2556338056887 is an equidigital number, since it uses as much as digits as its factorization.

2556338056887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8902949.

The product of its (nonzero) digits is 290304000, while the sum is 66.

The spelling of 2556338056887 in words is "two trillion, five hundred fifty-six billion, three hundred thirty-eight million, fifty-six thousand, eight hundred eighty-seven".