16700166621705 has 64 divisors (see below), whose sum is σ = 30562572418560. Its totient is φ = 7628082868224.

The previous prime is 16700166621683. The next prime is 16700166621731. The reversal of 16700166621705 is 50712666100761.

It is not a de Polignac number, because 16700166621705 - 2²⁴ = 16700149844489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1121034817 + ... + 1121049713.

It is an arithmetic number, because the mean of its divisors is an integer number (477540194040).

Almost surely, 2^{16700166621705} is an apocalyptic number.

16700166621705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16700166621705 is a deficient number, since it is larger than the sum of its proper divisors (13862405796855).

16700166621705 is a wasteful number, since it uses less digits than its factorization.

16700166621705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22978.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 16700166621705 in words is "sixteen trillion, seven hundred billion, one hundred sixty-six million, six hundred twenty-one thousand, seven hundred five".