12691458349127 has 8 divisors (see below), whose sum is σ = 12737358583296. Its totient is φ = 12645624591072.

The previous prime is 12691458349061. The next prime is 12691458349147. The reversal of 12691458349127 is 72194385419621.

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

It is a cyclic number.

It is not a de Polignac number, because 12691458349127 - 2¹² = 12691458345031 is a prime.

It is a super-2 number, since 2×12691458349127² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12691458349127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691458349147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16236488 + ... + 17000189.

It is an arithmetic number, because the mean of its divisors is an integer number (1592169822912).

Almost surely, 2^{12691458349127} is an apocalyptic number.

12691458349127 is a deficient number, since it is larger than the sum of its proper divisors (45900234169).

12691458349127 is an equidigital number, since it uses as much as digits as its factorization.

12691458349127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33238057.

The product of its digits is 26127360, while the sum is 62.

The spelling of 12691458349127 in words is "twelve trillion, six hundred ninety-one billion, four hundred fifty-eight million, three hundred forty-nine thousand, one hundred twenty-seven".