16661657223150 has 96 divisors (see below), whose sum is σ = 42830832270336. Its totient is φ = 4281940800000.

The previous prime is 16661657223149. The next prime is 16661657223161. The reversal of 16661657223150 is 5132275616661.

It is a happy number.

It is a super-2 number, since 2×16661657223150² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16661657223093 and 16661657223102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6313276 + ... + 8554575.

It is an arithmetic number, because the mean of its divisors is an integer number (446154502816).

Almost surely, 2^{16661657223150} is an apocalyptic number.

16661657223150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16661657223150 is an abundant number, since it is smaller than the sum of its proper divisors (26169175047186).

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

16661657223150 is a wasteful number, since it uses less digits than its factorization.

16661657223150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14868138 (or 14868133 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 16661657223150 in words is "sixteen trillion, six hundred sixty-one billion, six hundred fifty-seven million, two hundred twenty-three thousand, one hundred fifty".