13656065540 has 48 divisors (see below), whose sum is σ = 32226501888. Its totient is φ = 4823009664.

The previous prime is 13656065441. The next prime is 13656065569. The reversal of 13656065540 is 4556065631.

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, 1135832 + ... + 1147791.

It is an arithmetic number, because the mean of its divisors is an integer number (671385456).

Almost surely, 2^13656065540 is an apocalyptic number.

13656065540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13656065540 is an abundant number, since it is smaller than the sum of its proper divisors (18570436348).

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

13656065540 is a wasteful number, since it uses less digits than its factorization.

13656065540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283668 (or 2283666 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

Subtracting from 13656065540 its reverse (4556065631), we obtain a palindrome (9099999909).

The spelling of 13656065540 in words is "thirteen billion, six hundred fifty-six million, sixty-five thousand, five hundred forty".