166634640053343 has 128 divisors (see below), whose sum is σ = 310856451840000. Its totient is φ = 85699808593920.

The previous prime is 166634640053221. The next prime is 166634640053411. The reversal of 166634640053343 is 343350046436661.

It is not a de Polignac number, because 166634640053343 - 2¹⁸ = 166634639791199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166634640053343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166634640053143) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 280020583 + ... + 280615031.

It is an arithmetic number, because the mean of its divisors is an integer number (2428566030000).

Almost surely, 2^{166634640053343} is an apocalyptic number.

166634640053343 is a deficient number, since it is larger than the sum of its proper divisors (144221811786657).

166634640053343 is a wasteful number, since it uses less digits than its factorization.

166634640053343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595822 (or 595816 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 54.

The spelling of 166634640053343 in words is "one hundred sixty-six trillion, six hundred thirty-four billion, six hundred forty million, fifty-three thousand, three hundred forty-three".