13613537000 has 64 divisors (see below), whose sum is σ = 36406506240. Its totient is φ = 4667496000.

The previous prime is 13613536997. The next prime is 13613537009. The reversal of 13613537000 is 73531631.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13613537009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 965396 + ... + 979395.

It is an arithmetic number, because the mean of its divisors is an integer number (568851660).

Almost surely, 2^13613537000 is an apocalyptic number.

13613537000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13613537000 is an abundant number, since it is smaller than the sum of its proper divisors (22792969240).

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

13613537000 is a wasteful number, since it uses less digits than its factorization.

13613537000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944819 (or 1944805 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 29.

The spelling of 13613537000 in words is "thirteen billion, six hundred thirteen million, five hundred thirty-seven thousand".