13055011280 has 80 divisors (see below), whose sum is σ = 32499772560. Its totient is φ = 4859559936.

The previous prime is 13055011279. The next prime is 13055011313. The reversal of 13055011280 is 8211055031.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 472453696 + 12582557584 = 21736^2 + 112172^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67112 + ... + 174968.

It is an arithmetic number, because the mean of its divisors is an integer number (406247157).

Almost surely, 2^13055011280 is an apocalyptic number.

13055011280 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 13055011280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16249886280).

13055011280 is an abundant number, since it is smaller than the sum of its proper divisors (19444761280).

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

13055011280 is a wasteful number, since it uses less digits than its factorization.

13055011280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107976 (or 107970 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The spelling of 13055011280 in words is "thirteen billion, fifty-five million, eleven thousand, two hundred eighty".