2563863630561 has 32 divisors (see below), whose sum is σ = 3929825347200. Its totient is φ = 1650079408320.

The previous prime is 2563863630529. The next prime is 2563863630583. The reversal of 2563863630561 is 1650363683652.

2563863630561 is a `hidden beast` number, since 256 + 3 + 86 + 3 + 6 + 305 + 6 + 1 = 666.

It is not a de Polignac number, because 2563863630561 - 2⁵ = 2563863630529 is a prime.

It is a super-2 number, since 2×2563863630561² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2563863630498 and 2563863630507.

It is not an unprimeable number, because it can be changed into a prime (2563863630511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5659891 + ... + 6096071.

It is an arithmetic number, because the mean of its divisors is an integer number (122807042100).

Almost surely, 2^{2563863630561} is an apocalyptic number.

It is an amenable number.

2563863630561 is a deficient number, since it is larger than the sum of its proper divisors (1365961716639).

2563863630561 is a wasteful number, since it uses less digits than its factorization.

2563863630561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443726 (or 443720 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 54.

The spelling of 2563863630561 in words is "two trillion, five hundred sixty-three billion, eight hundred sixty-three million, six hundred thirty thousand, five hundred sixty-one".