12889438338950 has 24 divisors (see below), whose sum is σ = 24622310862912. Its totient is φ = 5016430055520.

The previous prime is 12889438338851. The next prime is 12889438338979. The reversal of 12889438338950 is 5983383498821.

It is a super-2 number, since 2×12889438338950² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3483630134 + ... + 3483633833.

It is an arithmetic number, because the mean of its divisors is an integer number (1025929619288).

Almost surely, 2^{12889438338950} is an apocalyptic number.

12889438338950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12889438338950 is a deficient number, since it is larger than the sum of its proper divisors (11732872523962).

12889438338950 is a wasteful number, since it uses less digits than its factorization.

12889438338950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6967264016 (or 6967264011 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 71.

The spelling of 12889438338950 in words is "twelve trillion, eight hundred eighty-nine billion, four hundred thirty-eight million, three hundred thirty-eight thousand, nine hundred fifty".