2256611563542 has 64 divisors (see below), whose sum is σ = 5187156033024. Its totient is φ = 641100994560.

The previous prime is 2256611563519. The next prime is 2256611563709. The reversal of 2256611563542 is 2453651166522.

It is a super-2 number, since 2×2256611563542² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2256611563491 and 2256611563500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17289933 + ... + 17419959.

It is an arithmetic number, because the mean of its divisors is an integer number (81049313016).

Almost surely, 2^{2256611563542} is an apocalyptic number.

2256611563542 is an abundant number, since it is smaller than the sum of its proper divisors (2930544469482).

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

2256611563542 is a wasteful number, since it uses less digits than its factorization.

2256611563542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132373.

The product of its digits is 2592000, while the sum is 48.

The spelling of 2256611563542 in words is "two trillion, two hundred fifty-six billion, six hundred eleven million, five hundred sixty-three thousand, five hundred forty-two".