1666833522355 has 16 divisors (see below), whose sum is σ = 2049467767200. Its totient is φ = 1300637098240.

The previous prime is 1666833522323. The next prime is 1666833522397. The reversal of 1666833522355 is 5532253386661.

It is not a de Polignac number, because 1666833522355 - 2⁵ = 1666833522323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1666833522296 and 1666833522305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81460 + ... + 1827649.

It is an arithmetic number, because the mean of its divisors is an integer number (128091735450).

Almost surely, 2^{1666833522355} is an apocalyptic number.

1666833522355 is a deficient number, since it is larger than the sum of its proper divisors (382634244845).

1666833522355 is a wasteful number, since it uses less digits than its factorization.

1666833522355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913414.

The product of its digits is 23328000, while the sum is 55.

The spelling of 1666833522355 in words is "one trillion, six hundred sixty-six billion, eight hundred thirty-three million, five hundred twenty-two thousand, three hundred fifty-five".