2563544560 has 20 divisors (see below), whose sum is σ = 5960241288. Its totient is φ = 1025417792.

The previous prime is 2563544539. The next prime is 2563544567. The reversal of 2563544560 is 654453652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×2563544560² = 13143521422211187200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563544567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16022074 + ... + 16022233.

Almost surely, 2^2563544560 is an apocalyptic number.

2563544560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2563544560 is an abundant number, since it is smaller than the sum of its proper divisors (3396696728).

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

2563544560 is a wasteful number, since it uses less digits than its factorization.

2563544560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32044320 (or 32044314 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

The square root of 2563544560 is about 50631.4582053490. The cubic root of 2563544560 is about 1368.6118320391.

The spelling of 2563544560 in words is "two billion, five hundred sixty-three million, five hundred forty-four thousand, five hundred sixty".