166416614661 has 24 divisors (see below), whose sum is σ = 248108526432. Its totient is φ = 98398556800.

The previous prime is 166416614641. The next prime is 166416614671.

166416614661 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 166416614661 - 2⁶ = 166416614597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166416614661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166416614641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1444506 + ... + 1555451.

It is an arithmetic number, because the mean of its divisors is an integer number (10337855268).

Almost surely, 2^166416614661 is an apocalyptic number.

166416614661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

166416614661 is a deficient number, since it is larger than the sum of its proper divisors (81691911771).

166416614661 is a wasteful number, since it uses less digits than its factorization.

166416614661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000053 (or 3000012 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The spelling of 166416614661 in words is "one hundred sixty-six billion, four hundred sixteen million, six hundred fourteen thousand, six hundred sixty-one".