15478444312 has 16 divisors (see below), whose sum is σ = 29729939400. Its totient is φ = 7550460480.

The previous prime is 15478444309. The next prime is 15478444313. The reversal of 15478444312 is 21344487451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15478444313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23594862 + ... + 23595517.

Almost surely, 2^15478444312 is an apocalyptic number.

It is an amenable number.

15478444312 is a deficient number, since it is larger than the sum of its proper divisors (14251495088).

15478444312 is a wasteful number, since it uses less digits than its factorization.

15478444312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47190426 (or 47190422 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The spelling of 15478444312 in words is "fifteen billion, four hundred seventy-eight million, four hundred forty-four thousand, three hundred twelve".