13020755804 has 48 divisors (see below), whose sum is σ = 27636618240. Its totient is φ = 5240021760.

The previous prime is 13020755789. The next prime is 13020755807. The reversal of 13020755804 is 40855702031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13020755807) 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, 177809 + ... + 240119.

It is an arithmetic number, because the mean of its divisors is an integer number (575762880).

Almost surely, 2^13020755804 is an apocalyptic number.

13020755804 is a gapful number since it is divisible by the number (14) 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 13020755804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13818309120).

13020755804 is an abundant number, since it is smaller than the sum of its proper divisors (14615862436).

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

13020755804 is a wasteful number, since it uses less digits than its factorization.

13020755804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62778 (or 62776 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 13020755804 in words is "thirteen billion, twenty million, seven hundred fifty-five thousand, eight hundred four".