15212320404 has 24 divisors (see below), whose sum is σ = 35501510688. Its totient is φ = 5069902560.

The previous prime is 15212320367. The next prime is 15212320411. The reversal of 15212320404 is 40402321251.

15212320404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34027 + ... + 177714.

It is an arithmetic number, because the mean of its divisors is an integer number (1479229612).

Almost surely, 2^15212320404 is an apocalyptic number.

It is an amenable number.

15212320404 is an abundant number, since it is smaller than the sum of its proper divisors (20289190284).

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

15212320404 is a wasteful number, since it uses less digits than its factorization.

15212320404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217735 (or 217733 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 15212320404 its reverse (40402321251), we get a palindrome (55614641655).

The spelling of 15212320404 in words is "fifteen billion, two hundred twelve million, three hundred twenty thousand, four hundred four".