12689339791490 has 8 divisors (see below), whose sum is σ = 22840811624700. Its totient is φ = 5075735916592.

The previous prime is 12689339791489. The next prime is 12689339791543. The reversal of 12689339791490 is 9419793398621.

12689339791490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12675116605369 + 14223186121 = 3560213^2 + 119261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12689339791490² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634466989565 + ... + 634466989584.

Almost surely, 2^{12689339791490} is an apocalyptic number.

12689339791490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12689339791490 is a deficient number, since it is larger than the sum of its proper divisors (10151471833210).

12689339791490 is a wasteful number, since it uses less digits than its factorization.

12689339791490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268933979156.

The product of its (nonzero) digits is 158723712, while the sum is 71.

The spelling of 12689339791490 in words is "twelve trillion, six hundred eighty-nine billion, three hundred thirty-nine million, seven hundred ninety-one thousand, four hundred ninety".