13005578600 has 96 divisors (see below), whose sum is σ = 34594809600. Its totient is φ = 4454265600.

The previous prime is 13005578567. The next prime is 13005578657. The reversal of 13005578600 is 687550031.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1450130 + ... + 1459070.

It is an arithmetic number, because the mean of its divisors is an integer number (360362600).

Almost surely, 2^13005578600 is an apocalyptic number.

13005578600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13005578600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17297404800).

13005578600 is an abundant number, since it is smaller than the sum of its proper divisors (21589231000).

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

13005578600 is a wasteful number, since it uses less digits than its factorization.

13005578600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10003 (or 9994 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 13005578600 in words is "thirteen billion, five million, five hundred seventy-eight thousand, six hundred".