16116566600661 has 8 divisors (see below), whose sum is σ = 21489026734560. Its totient is φ = 10744242100272.

The previous prime is 16116566600627. The next prime is 16116566600683. The reversal of 16116566600661 is 16600666561161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16116566600661 - 2⁶ = 16116566600597 is a prime.

It is a super-2 number, since 2×16116566600661² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16116566608661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33630795 + ... + 34106648.

It is an arithmetic number, because the mean of its divisors is an integer number (2686128341820).

Almost surely, 2^{16116566600661} is an apocalyptic number.

It is an amenable number.

16116566600661 is a deficient number, since it is larger than the sum of its proper divisors (5372460133899).

16116566600661 is an equidigital number, since it uses as much as digits as its factorization.

16116566600661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67816755.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 16116566600661 in words is "sixteen trillion, one hundred sixteen billion, five hundred sixty-six million, six hundred thousand, six hundred sixty-one".