13214572720 has 80 divisors (see below), whose sum is σ = 32090303232. Its totient is φ = 5051185920.

The previous prime is 13214572717. The next prime is 13214572729. The reversal of 13214572720 is 2727541231.

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

It is not an unprimeable number, because it can be changed into a prime (13214572729) 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, 2372659 + ... + 2378221.

Almost surely, 2^13214572720 is an apocalyptic number.

13214572720 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 13214572720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16045151616).

13214572720 is an abundant number, since it is smaller than the sum of its proper divisors (18875730512).

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

13214572720 is a wasteful number, since it uses less digits than its factorization.

13214572720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890 (or 6884 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 13214572720 in words is "thirteen billion, two hundred fourteen million, five hundred seventy-two thousand, seven hundred twenty".