13650013800 has 72 divisors (see below), whose sum is σ = 45841302390. Its totient is φ = 3640003200.

The previous prime is 13650013787. The next prime is 13650013807. The reversal of 13650013800 is 831005631.

13650013800 is a `hidden beast` number, since 1 + 3 + 650 + 0 + 1 + 3 + 8 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 11756197476 + 1893816324 = 108426^2 + 43518^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (13650013807) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3789871 + ... + 3793470.

Almost surely, 2^13650013800 is an apocalyptic number.

13650013800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13650013800 is an abundant number, since it is smaller than the sum of its proper divisors (32191288590).

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

13650013800 is a wasteful number, since it uses less digits than its factorization.

13650013800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7583363 (or 7583351 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 13650013800 in words is "thirteen billion, six hundred fifty million, thirteen thousand, eight hundred".