12239529040 has 20 divisors (see below), whose sum is σ = 28456905204. Its totient is φ = 4895811584.

The previous prime is 12239529019. The next prime is 12239529047. The reversal of 12239529040 is 4092593221.

It can be written as a sum of positive squares in 2 ways, for example, as 3435835456 + 8803693584 = 58616^2 + 93828^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×12239529040² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12239529047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76496977 + ... + 76497136.

Almost surely, 2^12239529040 is an apocalyptic number.

12239529040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12239529040 is an abundant number, since it is smaller than the sum of its proper divisors (16217376164).

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

12239529040 is a wasteful number, since it uses less digits than its factorization.

12239529040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152994126 (or 152994120 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 12239529040 in words is "twelve billion, two hundred thirty-nine million, five hundred twenty-nine thousand, forty".