1673641212823 has 4 divisors (see below), whose sum is σ = 1705219348968. Its totient is φ = 1642063076680.

The previous prime is 1673641212797. The next prime is 1673641212839. The reversal of 1673641212823 is 3282121463761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1673641212823 - 2²⁹ = 1673104341911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673641213823) 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, 15789067993 + ... + 15789068098.

It is an arithmetic number, because the mean of its divisors is an integer number (426304837242).

Almost surely, 2^{1673641212823} is an apocalyptic number.

1673641212823 is a deficient number, since it is larger than the sum of its proper divisors (31578136145).

1673641212823 is an equidigital number, since it uses as much as digits as its factorization.

1673641212823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31578136144.

The product of its digits is 580608, while the sum is 46.

The spelling of 1673641212823 in words is "one trillion, six hundred seventy-three billion, six hundred forty-one million, two hundred twelve thousand, eight hundred twenty-three".