16619765712 has 40 divisors (see below), whose sum is σ = 46837523040. Its totient is φ = 5036292480.

The previous prime is 16619765681. The next prime is 16619765713. The reversal of 16619765712 is 21756791661.

It is a happy number.

It is a super-2 number, since 2×16619765712² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16619765713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15737887 + ... + 15738942.

It is an arithmetic number, because the mean of its divisors is an integer number (1170938076).

Almost surely, 2^16619765712 is an apocalyptic number.

16619765712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16619765712 is an abundant number, since it is smaller than the sum of its proper divisors (30217757328).

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

16619765712 is a wasteful number, since it uses less digits than its factorization.

16619765712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31476851 (or 31476845 counting only the distinct ones).

The product of its digits is 952560, while the sum is 51.

The spelling of 16619765712 in words is "sixteen billion, six hundred nineteen million, seven hundred sixty-five thousand, seven hundred twelve".