13245585920 has 240 divisors, whose sum is σ = 38558032128. Its totient is φ = 4342947840.

The previous prime is 13245585877. The next prime is 13245585929. The reversal of 13245585920 is 2958554231.

It is not an unprimeable number, because it can be changed into a prime (13245585929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2882825 + ... + 2887415.

Almost surely, 2^13245585920 is an apocalyptic number.

13245585920 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 13245585920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19279016064).

13245585920 is an abundant number, since it is smaller than the sum of its proper divisors (25312446208).

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

13245585920 is an equidigital number, since it uses as much as digits as its factorization.

13245585920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651 (or 4628 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 13245585920 in words is "thirteen billion, two hundred forty-five million, five hundred eighty-five thousand, nine hundred twenty".