16620103720 has 128 divisors (see below), whose sum is σ = 44199872640. Its totient is φ = 5555773440.

The previous prime is 16620103697. The next prime is 16620103777. The reversal of 16620103720 is 2730102661.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295804 + ... + 347476.

It is an arithmetic number, because the mean of its divisors is an integer number (345311505).

Almost surely, 2^16620103720 is an apocalyptic number.

16620103720 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 16620103720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22099936320).

16620103720 is an abundant number, since it is smaller than the sum of its proper divisors (27579768920).

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

16620103720 is a wasteful number, since it uses less digits than its factorization.

16620103720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51755 (or 51751 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 16620103720 in words is "sixteen billion, six hundred twenty million, one hundred three thousand, seven hundred twenty".