999560166733 has 2 divisors, whose sum is σ = 999560166734. Its totient is φ = 999560166732.

The previous prime is 999560166721. The next prime is 999560166749. The reversal of 999560166733 is 337661065999.

It is the 408159-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 966393200809 + 33166965924 = 983053^2 + 182118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999560166733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999560166763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499780083366 + 499780083367.

It is an arithmetic number, because the mean of its divisors is an integer number (499780083367).

Almost surely, 2^999560166733 is an apocalyptic number.

It is an amenable number.

999560166733 is a deficient number, since it is larger than the sum of its proper divisors (1).

999560166733 is an equidigital number, since it uses as much as digits as its factorization.

999560166733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49601160, while the sum is 64.

The spelling of 999560166733 in words is "nine hundred ninety-nine billion, five hundred sixty million, one hundred sixty-six thousand, seven hundred thirty-three".