16662161116650 has 96 divisors (see below), whose sum is σ = 47374301957760. Its totient is φ = 3796479717120.

The previous prime is 16662161116637. The next prime is 16662161116691. The reversal of 16662161116650 is 5661116126661.

It is a super-2 number, since 2×16662161116650² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16662161116650.

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, 24696685 + ... + 25362384.

It is an arithmetic number, because the mean of its divisors is an integer number (493482312060).

Almost surely, 2^{16662161116650} is an apocalyptic number.

16662161116650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16662161116650 is an abundant number, since it is smaller than the sum of its proper divisors (30712140841110).

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

16662161116650 is a wasteful number, since it uses less digits than its factorization.

16662161116650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50059408 (or 50059403 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 16662161116650 in words is "sixteen trillion, six hundred sixty-two billion, one hundred sixty-one million, one hundred sixteen thousand, six hundred fifty".