12689339791485 has 16 divisors (see below), whose sum is σ = 23203364190336. Its totient is φ = 5800841047488.

The previous prime is 12689339791483. The next prime is 12689339791489. The reversal of 12689339791485 is 58419793398621.

It is not a de Polignac number, because 12689339791485 - 2¹ = 12689339791483 is a prime.

It is a super-2 number, since 2×12689339791485² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689339791483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60425427474 + ... + 60425427683.

It is an arithmetic number, because the mean of its divisors is an integer number (1450210261896).

Almost surely, 2^{12689339791485} is an apocalyptic number.

12689339791485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12689339791485 is a deficient number, since it is larger than the sum of its proper divisors (10514024398851).

12689339791485 is a wasteful number, since it uses less digits than its factorization.

12689339791485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120850855172.

The product of its digits is 705438720, while the sum is 75.

The spelling of 12689339791485 in words is "twelve trillion, six hundred eighty-nine billion, three hundred thirty-nine million, seven hundred ninety-one thousand, four hundred eighty-five".