673126391808 has 1008 divisors, whose sum is σ = 2349345791520. Its totient is φ = 190911873024.

The previous prime is 673126391801. The next prime is 673126391809. The reversal of 673126391808 is 808193621376.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673126391801) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 18192605166 + ... + 18192605202.

It is an arithmetic number, because the mean of its divisors is an integer number (2330700190).

Almost surely, 2^673126391808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673126391808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1174672895760).

673126391808 is an abundant number, since it is smaller than the sum of its proper divisors (1676219399712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673126391808 is an equidigital number, since it uses as much as digits as its factorization.

673126391808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 673126391808 in words is "six hundred seventy-three billion, one hundred twenty-six million, three hundred ninety-one thousand, eight hundred eight".