2563511394940 has 96 divisors (see below), whose sum is σ = 5491080129024. Its totient is φ = 1005104889600.

The previous prime is 2563511394907. The next prime is 2563511394989. The reversal of 2563511394940 is 494931153652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 451081339 + ... + 451087021.

It is an arithmetic number, because the mean of its divisors is an integer number (57198751344).

Almost surely, 2^{2563511394940} is an apocalyptic number.

2563511394940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2563511394940 is an abundant number, since it is smaller than the sum of its proper divisors (2927568734084).

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

2563511394940 is a wasteful number, since it uses less digits than its factorization.

2563511394940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7987 (or 7985 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 52.

The spelling of 2563511394940 in words is "two trillion, five hundred sixty-three billion, five hundred eleven million, three hundred ninety-four thousand, nine hundred forty".