13349722572 has 72 divisors (see below), whose sum is σ = 34888310912. Its totient is φ = 4299609600.

The previous prime is 13349722559. The next prime is 13349722577. The reversal of 13349722572 is 27522794331.

13349722572 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 9 + 72 + 2 + 572 = 666.

It is not an unprimeable number, because it can be changed into a prime (13349722577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 728628 + ... + 746724.

Almost surely, 2^13349722572 is an apocalyptic number.

13349722572 is a gapful number since it is divisible by the number (12) 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 13349722572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17444155456).

13349722572 is an abundant number, since it is smaller than the sum of its proper divisors (21538588340).

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

13349722572 is a wasteful number, since it uses less digits than its factorization.

13349722572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18799 (or 18794 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 13349722572 in words is "thirteen billion, three hundred forty-nine million, seven hundred twenty-two thousand, five hundred seventy-two".