889161798722 has 6 divisors (see below), whose sum is σ = 1333744698393. Its totient is φ = 444580232592.

The previous prime is 889161798713. The next prime is 889161798737. The reversal of 889161798722 is 227897161988.

It can be written as a sum of positive squares in 2 ways, for example, as 824829056401 + 64332742321 = 908201^2 + 253639^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=666769.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1000154 + ... + 1666922.

Almost surely, 2^889161798722 is an apocalyptic number.

889161798722 is a deficient number, since it is larger than the sum of its proper divisors (444582899671).

889161798722 is an frugal number, since it uses more digits than its factorization.

889161798722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333540 (or 666771 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 68.

The spelling of 889161798722 in words is "eight hundred eighty-nine billion, one hundred sixty-one million, seven hundred ninety-eight thousand, seven hundred twenty-two".