16551362172 has 48 divisors (see below), whose sum is σ = 38974113920. Its totient is φ = 5466667968.

The previous prime is 16551362161. The next prime is 16551362203. The reversal of 16551362172 is 27126315561.

It is a self number, because there is not a number n which added to its sum of digits gives 16551362172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 862878 + ... + 881850.

Almost surely, 2^16551362172 is an apocalyptic number.

16551362172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16551362172 is an abundant number, since it is smaller than the sum of its proper divisors (22422751748).

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

16551362172 is a wasteful number, since it uses less digits than its factorization.

16551362172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19642 (or 19640 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The spelling of 16551362172 in words is "sixteen billion, five hundred fifty-one million, three hundred sixty-two thousand, one hundred seventy-two".