2115563456 has 28 divisors (see below), whose sum is σ = 4342836120. Its totient is φ = 1021305600.

The previous prime is 2115563449. The next prime is 2115563477. The reversal of 2115563456 is 6543655112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568070 + ... + 571781.

It is an arithmetic number, because the mean of its divisors is an integer number (155101290).

Almost surely, 2^2115563456 is an apocalyptic number.

It is an amenable number.

2115563456 is an abundant number, since it is smaller than the sum of its proper divisors (2227272664).

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

2115563456 is a wasteful number, since it uses less digits than its factorization.

2115563456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139892 (or 1139882 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 2115563456 is about 45995.2547117635. The cubic root of 2115563456 is about 1283.7349116152.

The spelling of 2115563456 in words is "two billion, one hundred fifteen million, five hundred sixty-three thousand, four hundred fifty-six".