16720185245380 has 24 divisors (see below), whose sum is σ = 35112646352448. Its totient is φ = 6688025081568.

The previous prime is 16720185245369. The next prime is 16720185245443. The reversal of 16720185245380 is 8354258102761.

It is a super-2 number, since 2×16720185245380² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201184 + ... + 5786263.

It is an arithmetic number, because the mean of its divisors is an integer number (1463026931352).

Almost surely, 2^{16720185245380} is an apocalyptic number.

16720185245380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16720185245380 is an abundant number, since it is smaller than the sum of its proper divisors (18392461107068).

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

16720185245380 is a wasteful number, since it uses less digits than its factorization.

16720185245380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6127083 (or 6127081 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 16720185245380 in words is "sixteen trillion, seven hundred twenty billion, one hundred eighty-five million, two hundred forty-five thousand, three hundred eighty".