13623605540 has 12 divisors (see below), whose sum is σ = 28609571676. Its totient is φ = 5449442208.

The previous prime is 13623605539. The next prime is 13623605543. The reversal of 13623605540 is 4550632631.

It can be written as a sum of positive squares in 2 ways, for example, as 6195578944 + 7428026596 = 78712^2 + 86186^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13623605540.

It is not an unprimeable number, because it can be changed into a prime (13623605543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340590119 + ... + 340590158.

It is an arithmetic number, because the mean of its divisors is an integer number (2384130973).

Almost surely, 2^13623605540 is an apocalyptic number.

13623605540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13623605540 is an abundant number, since it is smaller than the sum of its proper divisors (14985966136).

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

13623605540 is a wasteful number, since it uses less digits than its factorization.

13623605540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681180286 (or 681180284 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 13623605540 in words is "thirteen billion, six hundred twenty-three million, six hundred five thousand, five hundred forty".