16509713700 has 144 divisors (see below), whose sum is σ = 50496768000. Its totient is φ = 4153080960.

The previous prime is 16509713639. The next prime is 16509713707. The reversal of 16509713700 is 731790561.

It is not an unprimeable number, because it can be changed into a prime (16509713707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1356241 + ... + 1368359.

It is an arithmetic number, because the mean of its divisors is an integer number (350672000).

Almost surely, 2^16509713700 is an apocalyptic number.

16509713700 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 16509713700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25248384000).

16509713700 is an abundant number, since it is smaller than the sum of its proper divisors (33987054300).

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

16509713700 is a wasteful number, since it uses less digits than its factorization.

16509713700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12394 (or 12387 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 39.

The spelling of 16509713700 in words is "sixteen billion, five hundred nine million, seven hundred thirteen thousand, seven hundred".