16346817612081 has 24 divisors (see below), whose sum is σ = 27273834735264. Its totient is φ = 9324387941760.

The previous prime is 16346817612077. The next prime is 16346817612109. The reversal of 16346817612081 is 18021671864361.

16346817612081 is a `hidden beast` number, since 1 + 6 + 3 + 4 + 6 + 8 + 17 + 612 + 0 + 8 + 1 = 666.

It is not a de Polignac number, because 16346817612081 - 2² = 16346817612077 is a prime.

It is a super-2 number, since 2×16346817612081² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16346817612011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4856450371 + ... + 4856453736.

It is an arithmetic number, because the mean of its divisors is an integer number (1136409780636).

Almost surely, 2^{16346817612081} is an apocalyptic number.

16346817612081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16346817612081 is a deficient number, since it is larger than the sum of its proper divisors (10927017123183).

16346817612081 is a wasteful number, since it uses less digits than its factorization.

16346817612081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9712904141 (or 9712904138 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 16346817612081 in words is "sixteen trillion, three hundred forty-six billion, eight hundred seventeen million, six hundred twelve thousand, eighty-one".