16765215500 has 144 divisors (see below), whose sum is σ = 40495282464. Its totient is φ = 6058800000.

The previous prime is 16765215469. The next prime is 16765215541. The reversal of 16765215500 is 551256761.

16765215500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16765215500² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10949735 + ... + 10951265.

Almost surely, 2^16765215500 is an apocalyptic number.

16765215500 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 16765215500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20247641232).

16765215500 is an abundant number, since it is smaller than the sum of its proper divisors (23730066964).

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

16765215500 is a wasteful number, since it uses less digits than its factorization.

16765215500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753 (or 1730 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 16765215500 in words is "sixteen billion, seven hundred sixty-five million, two hundred fifteen thousand, five hundred".