12533591479 has 8 divisors (see below), whose sum is σ = 13291384608. Its totient is φ = 11778078720.

The previous prime is 12533591459. The next prime is 12533591489. The reversal of 12533591479 is 97419533521.

It is a happy number.

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

It is not a de Polignac number, because 12533591479 - 2⁷ = 12533591351 is a prime.

It is a super-2 number, since 2×12533591479² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533591459) 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, 558762 + ... + 580759.

It is an arithmetic number, because the mean of its divisors is an integer number (1661423076).

Almost surely, 2^12533591479 is an apocalyptic number.

12533591479 is a deficient number, since it is larger than the sum of its proper divisors (757793129).

12533591479 is a wasteful number, since it uses less digits than its factorization.

12533591479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140185.

The product of its digits is 1020600, while the sum is 49.

The spelling of 12533591479 in words is "twelve billion, five hundred thirty-three million, five hundred ninety-one thousand, four hundred seventy-nine".