16720500500 has 48 divisors (see below), whose sum is σ = 39837365568. Its totient is φ = 6080180000.

The previous prime is 16720500499. The next prime is 16720500527. The reversal of 16720500500 is 500502761.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16720500500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1514546 + ... + 1525545.

It is an arithmetic number, because the mean of its divisors is an integer number (829945116).

Almost surely, 2^16720500500 is an apocalyptic number.

16720500500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16720500500 is an abundant number, since it is smaller than the sum of its proper divisors (23116865068).

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

16720500500 is a wasteful number, since it uses less digits than its factorization.

16720500500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040121 (or 3040109 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The spelling of 16720500500 in words is "sixteen billion, seven hundred twenty million, five hundred thousand, five hundred".