1666614517107 has 16 divisors (see below), whose sum is σ = 2227088729088. Its totient is φ = 1108608621120.

The previous prime is 1666614517097. The next prime is 1666614517111. The reversal of 1666614517107 is 7017154166661.

It is not a de Polignac number, because 1666614517107 - 2²² = 1666610322803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1666614517107.

It is not an unprimeable number, because it can be changed into a prime (1666614587107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33854503 + ... + 33903695.

It is an arithmetic number, because the mean of its divisors is an integer number (139193045568).

Almost surely, 2^{1666614517107} is an apocalyptic number.

1666614517107 is a deficient number, since it is larger than the sum of its proper divisors (560474211981).

1666614517107 is a wasteful number, since it uses less digits than its factorization.

1666614517107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74050.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 1666614517107 in words is "one trillion, six hundred sixty-six billion, six hundred fourteen million, five hundred seventeen thousand, one hundred seven".