16620202500 has 480 divisors, whose sum is σ = 58193372160. Its totient is φ = 3643200000.

The previous prime is 16620202493. The next prime is 16620202517. The reversal of 16620202500 is 520202661.

It is a super-2 number, since 2×16620202500² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 36052270 + ... + 36052730.

It is an arithmetic number, because the mean of its divisors is an integer number (121236192).

Almost surely, 2^16620202500 is an apocalyptic number.

16620202500 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 16620202500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29096686080).

16620202500 is an abundant number, since it is smaller than the sum of its proper divisors (41573169660).

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

16620202500 is a wasteful number, since it uses less digits than its factorization.

16620202500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The spelling of 16620202500 in words is "sixteen billion, six hundred twenty million, two hundred two thousand, five hundred".