12269638479 has 32 divisors (see below), whose sum is σ = 18789076480. Its totient is φ = 6976616832.

The previous prime is 12269638457. The next prime is 12269638501. The reversal of 12269638479 is 97483696221.

It is an interprime number because it is at equal distance from previous prime (12269638457) and next prime (12269638501).

It is not a de Polignac number, because 12269638479 - 2¹⁷ = 12269507407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12269638079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7350657 + ... + 7352325.

It is an arithmetic number, because the mean of its divisors is an integer number (587158640).

Almost surely, 2^12269638479 is an apocalyptic number.

12269638479 is a deficient number, since it is larger than the sum of its proper divisors (6519438001).

12269638479 is a wasteful number, since it uses less digits than its factorization.

12269638479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199.

The product of its digits is 7838208, while the sum is 57.

The spelling of 12269638479 in words is "twelve billion, two hundred sixty-nine million, six hundred thirty-eight thousand, four hundred seventy-nine".