13297091220 has 384 divisors, whose sum is σ = 48363678720. Its totient is φ = 3007632384.

The previous prime is 13297091173. The next prime is 13297091231. The reversal of 13297091220 is 2219079231.

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 127 ways as a sum of consecutive naturals, for example, 41946502 + ... + 41946818.

It is an arithmetic number, because the mean of its divisors is an integer number (125947080).

Almost surely, 2^13297091220 is an apocalyptic number.

13297091220 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 13297091220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24181839360).

13297091220 is an abundant number, since it is smaller than the sum of its proper divisors (35066587500).

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

13297091220 is a wasteful number, since it uses less digits than its factorization.

13297091220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The spelling of 13297091220 in words is "thirteen billion, two hundred ninety-seven million, ninety-one thousand, two hundred twenty".