673212636861 has 8 divisors (see below), whose sum is σ = 904168797504. Its totient is φ = 445532450400.

The previous prime is 673212636841. The next prime is 673212636869. The reversal of 673212636861 is 168636212376.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 673212636861 - 2²⁶ = 673145527997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673212636869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818993065 + ... + 818993886.

It is an arithmetic number, because the mean of its divisors is an integer number (113021099688).

Almost surely, 2^673212636861 is an apocalyptic number.

It is an amenable number.

673212636861 is a deficient number, since it is larger than the sum of its proper divisors (230956160643).

673212636861 is a wasteful number, since it uses less digits than its factorization.

673212636861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637987091.

The product of its digits is 2612736, while the sum is 51.

The spelling of 673212636861 in words is "six hundred seventy-three billion, two hundred twelve million, six hundred thirty-six thousand, eight hundred sixty-one".