13440511560 has 64 divisors (see below), whose sum is σ = 46081756800. Its totient is φ = 3072116736.

The previous prime is 13440511549. The next prime is 13440511573. The reversal of 13440511560 is 6511504431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 7999465 + ... + 8001144.

It is an arithmetic number, because the mean of its divisors is an integer number (720027450).

Almost surely, 2^13440511560 is an apocalyptic number.

13440511560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13440511560 is an abundant number, since it is smaller than the sum of its proper divisors (32641245240).

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

13440511560 is a wasteful number, since it uses less digits than its factorization.

13440511560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16000630 (or 16000626 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 13440511560 in words is "thirteen billion, four hundred forty million, five hundred eleven thousand, five hundred sixty".