16918310172 has 24 divisors (see below), whose sum is σ = 41798178576. Its totient is φ = 5307705088.

The previous prime is 16918310131. The next prime is 16918310173. The reversal of 16918310172 is 27101381961.

It is a self number, because there is not a number n which added to its sum of digits gives 16918310172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16918310173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41466243 + ... + 41466650.

It is an arithmetic number, because the mean of its divisors is an integer number (1741590774).

Almost surely, 2^16918310172 is an apocalyptic number.

16918310172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16918310172 is an abundant number, since it is smaller than the sum of its proper divisors (24879868404).

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

16918310172 is a wasteful number, since it uses less digits than its factorization.

16918310172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82932917 (or 82932915 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The spelling of 16918310172 in words is "sixteen billion, nine hundred eighteen million, three hundred ten thousand, one hundred seventy-two".