999425853361 has 32 divisors (see below), whose sum is σ = 1091083010976. Its totient is φ = 909950976000.

The previous prime is 999425853353. The next prime is 999425853389. The reversal of 999425853361 is 163358524999.

999425853361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 527539289761 + 471886563600 = 726319^2 + 686940^2 .

It is a 5-Lehmer number, since φ(999425853361) divides (999425853361-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 999425853361 - 2³ = 999425853353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999425853293 and 999425853302.

It is not an unprimeable number, because it can be changed into a prime (999425853061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 734331321 + ... + 734332681.

It is an arithmetic number, because the mean of its divisors is an integer number (34096344093).

It is a Poulet number, since it divides 2^999425853360-1.

Almost surely, 2^999425853361 is an apocalyptic number.

It is an amenable number.

999425853361 is a deficient number, since it is larger than the sum of its proper divisors (91657157615).

999425853361 is a wasteful number, since it uses less digits than its factorization.

999425853361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013.

The product of its digits is 62985600, while the sum is 64.

The spelling of 999425853361 in words is "nine hundred ninety-nine billion, four hundred twenty-five million, eight hundred fifty-three thousand, three hundred sixty-one".