13320726804 has 192 divisors, whose sum is σ = 43870740480. Its totient is φ = 3394535040.

The previous prime is 13320726787. The next prime is 13320726821. The reversal of 13320726804 is 40862702331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13320726787) and next prime (13320726821).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 425637 + ... + 455859.

It is an arithmetic number, because the mean of its divisors is an integer number (228493440).

Almost surely, 2^13320726804 is an apocalyptic number.

13320726804 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 13320726804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21935370240).

13320726804 is an abundant number, since it is smaller than the sum of its proper divisors (30550013676).

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

13320726804 is a wasteful number, since it uses less digits than its factorization.

13320726804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30307 (or 30299 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 13320726804 in words is "thirteen billion, three hundred twenty million, seven hundred twenty-six thousand, eight hundred four".