12889001284 has 6 divisors (see below), whose sum is σ = 22555752254. Its totient is φ = 6444500640.

The previous prime is 12889001263. The next prime is 12889001287. The reversal of 12889001284 is 48210098821.

It can be written as a sum of positive squares in only one way, i.e., 12163884100 + 725117184 = 110290^2 + 26928^2 .

It is a super-2 number, since 2×12889001284² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12889001284.

It is not an unprimeable number, because it can be changed into a prime (12889001287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611125157 + ... + 1611125164.

Almost surely, 2^12889001284 is an apocalyptic number.

It is an amenable number.

12889001284 is a deficient number, since it is larger than the sum of its proper divisors (9666750970).

12889001284 is a wasteful number, since it uses less digits than its factorization.

12889001284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222250325 (or 3222250323 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The spelling of 12889001284 in words is "twelve billion, eight hundred eighty-nine million, one thousand, two hundred eighty-four".