999746295673 has 2 divisors, whose sum is σ = 999746295674. Its totient is φ = 999746295672.

The previous prime is 999746295637. The next prime is 999746295683. The reversal of 999746295673 is 376592647999.

It is the 408197-th star number.

Together with previous prime (999746295637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 571699307664 + 428046988009 = 756108^2 + 654253^2 .

It is a cyclic number.

It is not a de Polignac number, because 999746295673 - 2¹³ = 999746287481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999746295673.

It is not a weakly prime, because it can be changed into another prime (999746295623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499873147836 + 499873147837.

It is an arithmetic number, because the mean of its divisors is an integer number (499873147837).

Almost surely, 2^999746295673 is an apocalyptic number.

It is an amenable number.

999746295673 is a deficient number, since it is larger than the sum of its proper divisors (1).

999746295673 is an equidigital number, since it uses as much as digits as its factorization.

999746295673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1388832480, while the sum is 76.

The spelling of 999746295673 in words is "nine hundred ninety-nine billion, seven hundred forty-six million, two hundred ninety-five thousand, six hundred seventy-three".