12990300032 has 64 divisors (see below), whose sum is σ = 27673183440. Its totient is φ = 6052454400.

The previous prime is 12990300031. The next prime is 12990300041. The reversal of 12990300032 is 23000309921.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 12990299968 and 12990300004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12990300031) 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 7 ways as a sum of consecutive naturals, for example, 190223 + ... + 249329.

Almost surely, 2^12990300032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12990300032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13836591720).

12990300032 is an abundant number, since it is smaller than the sum of its proper divisors (14682883408).

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

12990300032 is a wasteful number, since it uses less digits than its factorization.

12990300032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59239 (or 59227 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

Adding to 12990300032 its reverse (23000309921), we get a palindrome (35990609953).

The spelling of 12990300032 in words is "twelve billion, nine hundred ninety million, three hundred thousand, thirty-two".