12232151538 has 16 divisors (see below), whose sum is σ = 24498816960. Its totient is φ = 4071631536.

The previous prime is 12232151537. The next prime is 12232151543. The reversal of 12232151538 is 83515123221.

It is a junction number, because it is equal to n+sod(n) for n = 12232151499 and 12232151508.

It is not an unprimeable number, because it can be changed into a prime (12232151537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433470 + ... + 1441977.

It is an arithmetic number, because the mean of its divisors is an integer number (1531176060).

Almost surely, 2^12232151538 is an apocalyptic number.

12232151538 is an abundant number, since it is smaller than the sum of its proper divisors (12266665422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12232151538 is a wasteful number, since it uses less digits than its factorization.

12232151538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876161.

The product of its digits is 14400, while the sum is 33.

Adding to 12232151538 its reverse (83515123221), we get a palindrome (95747274759).

The spelling of 12232151538 in words is "twelve billion, two hundred thirty-two million, one hundred fifty-one thousand, five hundred thirty-eight".