12533442405 has 16 divisors (see below), whose sum is σ = 21876554304. Its totient is φ = 6076820480.

The previous prime is 12533442403. The next prime is 12533442407. The reversal of 12533442405 is 50424433521.

It is an interprime number because it is at equal distance from previous prime (12533442403) and next prime (12533442407).

It is not a de Polignac number, because 12533442405 - 2¹ = 12533442403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533442403) 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, 37979964 + ... + 37980293.

It is an arithmetic number, because the mean of its divisors is an integer number (1367284644).

Almost surely, 2^12533442405 is an apocalyptic number.

12533442405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12533442405 is a deficient number, since it is larger than the sum of its proper divisors (9343111899).

12533442405 is a wasteful number, since it uses less digits than its factorization.

12533442405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75960276.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 12533442405 its reverse (50424433521), we get a palindrome (62957875926).

The spelling of 12533442405 in words is "twelve billion, five hundred thirty-three million, four hundred forty-two thousand, four hundred five".