16771657212 has 72 divisors (see below), whose sum is σ = 42952789152. Its totient is φ = 5517360000.

The previous prime is 16771657153. The next prime is 16771657213. The reversal of 16771657212 is 21275617761.

16771657212 is a `hidden beast` number, since 1 + 6 + 7 + 71 + 6 + 572 + 1 + 2 = 666.

It is a super-2 number, since 2×16771657212² (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 (16771657213) 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 23 ways as a sum of consecutive naturals, for example, 1145337 + ... + 1159887.

It is an arithmetic number, because the mean of its divisors is an integer number (596566516).

Almost surely, 2^16771657212 is an apocalyptic number.

16771657212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16771657212 is an abundant number, since it is smaller than the sum of its proper divisors (26181131940).

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

16771657212 is a wasteful number, since it uses less digits than its factorization.

16771657212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14979 (or 14974 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The spelling of 16771657212 in words is "sixteen billion, seven hundred seventy-one million, six hundred fifty-seven thousand, two hundred twelve".