13564006440 has 64 divisors (see below), whose sum is σ = 42095203200. Its totient is φ = 3492340992.

The previous prime is 13564006439. The next prime is 13564006481. The reversal of 13564006440 is 4460046531.

It is a super-2 number, since 2×13564006440² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1945372 + ... + 1952331.

It is an arithmetic number, because the mean of its divisors is an integer number (657737550).

Almost surely, 2^13564006440 is an apocalyptic number.

13564006440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13564006440 is an abundant number, since it is smaller than the sum of its proper divisors (28531196760).

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

13564006440 is a wasteful number, since it uses less digits than its factorization.

13564006440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897746 (or 3897742 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 13564006440 in words is "thirteen billion, five hundred sixty-four million, six thousand, four hundred forty".