16660400465212 has 12 divisors (see below), whose sum is σ = 33320800930480. Its totient is φ = 7140171627936.

The previous prime is 16660400465183. The next prime is 16660400465231. The reversal of 16660400465212 is 21256400406661.

16660400465212 is an admirable number.

It is a super-2 number, since 2×16660400465212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297507151137 + ... + 297507151192.

Almost surely, 2^{16660400465212} is an apocalyptic number.

It is an amenable number.

16660400465212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16660400465212 is a wasteful number, since it uses less digits than its factorization.

16660400465212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595014302340 (or 595014302338 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 16660400465212 in words is "sixteen trillion, six hundred sixty billion, four hundred million, four hundred sixty-five thousand, two hundred twelve".