12889042388 has 48 divisors (see below), whose sum is σ = 25183509120. Its totient is φ = 5736167424.

The previous prime is 12889042357. The next prime is 12889042393. The reversal of 12889042388 is 88324098821.

It is a super-2 number, since 2×12889042388² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757745 + ... + 774567.

It is an arithmetic number, because the mean of its divisors is an integer number (524656440).

Almost surely, 2^12889042388 is an apocalyptic number.

It is an amenable number.

12889042388 is a deficient number, since it is larger than the sum of its proper divisors (12294466732).

12889042388 is a wasteful number, since it uses less digits than its factorization.

12889042388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17456 (or 17454 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 53.

The spelling of 12889042388 in words is "twelve billion, eight hundred eighty-nine million, forty-two thousand, three hundred eighty-eight".