13516645540 has 24 divisors (see below), whose sum is σ = 28395243072. Its totient is φ = 5404698720.

The previous prime is 13516645529. The next prime is 13516645547. The reversal of 13516645540 is 4554661531.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13516645493 and 13516645502.

It is not an unprimeable number, because it can be changed into a prime (13516645547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65254 + ... + 176893.

It is an arithmetic number, because the mean of its divisors is an integer number (1183135128).

Almost surely, 2^13516645540 is an apocalyptic number.

13516645540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13516645540 is an abundant number, since it is smaller than the sum of its proper divisors (14878597532).

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

13516645540 is a wasteful number, since it uses less digits than its factorization.

13516645540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244947 (or 244945 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 13516645540 in words is "thirteen billion, five hundred sixteen million, six hundred forty-five thousand, five hundred forty".