2166323241475 has 12 divisors (see below), whose sum is σ = 2686381446496. Its totient is φ = 1732967866080.

The previous prime is 2166323241473. The next prime is 2166323241493. The reversal of 2166323241475 is 5741423236612.

It is not a de Polignac number, because 2166323241475 - 2¹ = 2166323241473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166323241473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1779012 + ... + 2738161.

Almost surely, 2^{2166323241475} is an apocalyptic number.

2166323241475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2166323241475 is a deficient number, since it is larger than the sum of its proper divisors (520058205021).

2166323241475 is a wasteful number, since it uses less digits than its factorization.

2166323241475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536366 (or 4536361 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 46.

The spelling of 2166323241475 in words is "two trillion, one hundred sixty-six billion, three hundred twenty-three million, two hundred forty-one thousand, four hundred seventy-five".