889146478857 has 128 divisors (see below), whose sum is σ = 1543506886656. Its totient is φ = 442453600512.

The previous prime is 889146478841. The next prime is 889146478859. The reversal of 889146478857 is 758874641988.

It is not a de Polignac number, because 889146478857 - 2⁴ = 889146478841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (889146478859) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 430995808 + ... + 430997870.

It is an arithmetic number, because the mean of its divisors is an integer number (12058647552).

Almost surely, 2^889146478857 is an apocalyptic number.

It is an amenable number.

889146478857 is a deficient number, since it is larger than the sum of its proper divisors (654360407799).

889146478857 is a wasteful number, since it uses less digits than its factorization.

889146478857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019.

The product of its digits is 867041280, while the sum is 75.

The spelling of 889146478857 in words is "eight hundred eighty-nine billion, one hundred forty-six million, four hundred seventy-eight thousand, eight hundred fifty-seven".