166047673453 has 4 divisors (see below), whose sum is σ = 171404050048. Its totient is φ = 160691296860.

The previous prime is 166047673439. The next prime is 166047673487. The reversal of 166047673453 is 354376740661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166047673453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166047673453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166047673433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678188251 + ... + 2678188312.

It is an arithmetic number, because the mean of its divisors is an integer number (42851012512).

Almost surely, 2^166047673453 is an apocalyptic number.

It is an amenable number.

166047673453 is a deficient number, since it is larger than the sum of its proper divisors (5356376595).

166047673453 is an equidigital number, since it uses as much as digits as its factorization.

166047673453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356376594.

The product of its (nonzero) digits is 7620480, while the sum is 52.

The spelling of 166047673453 in words is "one hundred sixty-six billion, forty-seven million, six hundred seventy-three thousand, four hundred fifty-three".