13721382570 has 192 divisors, whose sum is σ = 40576536576. Its totient is φ = 2907273600.

The previous prime is 13721382503. The next prime is 13721382581. The reversal of 13721382570 is 7528312731.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3561145 + ... + 3564995.

It is an arithmetic number, because the mean of its divisors is an integer number (211336128).

Almost surely, 2^13721382570 is an apocalyptic number.

13721382570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13721382570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20288268288).

13721382570 is an abundant number, since it is smaller than the sum of its proper divisors (26855154006).

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

13721382570 is a wasteful number, since it uses less digits than its factorization.

13721382570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953 (or 3934 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 13721382570 in words is "thirteen billion, seven hundred twenty-one million, three hundred eighty-two thousand, five hundred seventy".