2556352321338 has 16 divisors (see below), whose sum is σ = 5237404756416. Its totient is φ = 831334088160.

The previous prime is 2556352321333. The next prime is 2556352321343. The reversal of 2556352321338 is 8331232536552.

It is an interprime number because it is at equal distance from previous prime (2556352321333) and next prime (2556352321343).

It is a super-2 number, since 2×2556352321338² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2556352321331) 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, 5195837806 + ... + 5195838297.

It is an arithmetic number, because the mean of its divisors is an integer number (327337797276).

Almost surely, 2^{2556352321338} is an apocalyptic number.

2556352321338 is an abundant number, since it is smaller than the sum of its proper divisors (2681052435078).

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

2556352321338 is a wasteful number, since it uses less digits than its factorization.

2556352321338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10391676149.

The product of its digits is 3888000, while the sum is 48.

The spelling of 2556352321338 in words is "two trillion, five hundred fifty-six billion, three hundred fifty-two million, three hundred twenty-one thousand, three hundred thirty-eight".