2166207317373 has 48 divisors (see below), whose sum is σ = 3194409653568. Its totient is φ = 1304734675200.

The previous prime is 2166207317321. The next prime is 2166207317401. The reversal of 2166207317373 is 3737137026612.

It is not a de Polignac number, because 2166207317373 - 2¹⁴ = 2166207300989 is a prime.

It is a super-2 number, since 2×2166207317373² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166207319373) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38060065 + ... + 38116937.

It is an arithmetic number, because the mean of its divisors is an integer number (66550201116).

Almost surely, 2^{2166207317373} is an apocalyptic number.

It is an amenable number.

2166207317373 is a deficient number, since it is larger than the sum of its proper divisors (1028202336195).

2166207317373 is a wasteful number, since it uses less digits than its factorization.

2166207317373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57546 (or 57535 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 48.

The spelling of 2166207317373 in words is "two trillion, one hundred sixty-six billion, two hundred seven million, three hundred seventeen thousand, three hundred seventy-three".