1666675100115 has 48 divisors (see below), whose sum is σ = 2929700135232. Its totient is φ = 876350748672.

The previous prime is 1666675100113. The next prime is 1666675100143. The reversal of 1666675100115 is 5110015766661.

It is not a de Polignac number, because 1666675100115 - 2¹ = 1666675100113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1666675100113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7854859 + ... + 8064251.

It is an arithmetic number, because the mean of its divisors is an integer number (61035419484).

Almost surely, 2^{1666675100115} is an apocalyptic number.

1666675100115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1666675100115 is a deficient number, since it is larger than the sum of its proper divisors (1263025035117).

1666675100115 is a wasteful number, since it uses less digits than its factorization.

1666675100115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211900 (or 211897 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 1666675100115 in words is "one trillion, six hundred sixty-six billion, six hundred seventy-five million, one hundred thousand, one hundred fifteen".