1564140510440 has 64 divisors (see below), whose sum is σ = 3922457659200. Its totient is φ = 557860635648.

The previous prime is 1564140510437. The next prime is 1564140510479. The reversal of 1564140510440 is 440150414651.

It is a self number, because there is not a number n which added to its sum of digits gives 1564140510440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60518834 + ... + 60544673.

It is an arithmetic number, because the mean of its divisors is an integer number (61288400925).

Almost surely, 2^{1564140510440} is an apocalyptic number.

1564140510440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1564140510440 is an abundant number, since it is smaller than the sum of its proper divisors (2358317148760).

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

1564140510440 is a wasteful number, since it uses less digits than its factorization.

1564140510440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121063554 (or 121063550 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 1564140510440 in words is "one trillion, five hundred sixty-four billion, one hundred forty million, five hundred ten thousand, four hundred forty".