2556631533336 has 32 divisors (see below), whose sum is σ = 6451313221440. Its totient is φ = 844245926048.

The previous prime is 2556631533329. The next prime is 2556631533361. The reversal of 2556631533336 is 6333351366552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497783946 + ... + 497789081.

It is an arithmetic number, because the mean of its divisors is an integer number (201603538170).

Almost surely, 2^{2556631533336} is an apocalyptic number.

It is an amenable number.

2556631533336 is an abundant number, since it is smaller than the sum of its proper divisors (3894681688104).

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

2556631533336 is a wasteful number, since it uses less digits than its factorization.

2556631533336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995573143 (or 995573139 counting only the distinct ones).

The product of its digits is 13122000, while the sum is 51.

Adding to 2556631533336 its reverse (6333351366552), we get a palindrome (8889982899888).

The spelling of 2556631533336 in words is "two trillion, five hundred fifty-six billion, six hundred thirty-one million, five hundred thirty-three thousand, three hundred thirty-six".