15772323472 has 20 divisors (see below), whose sum is σ = 32167239280. Its totient is φ = 7471100448.

The previous prime is 15772323451. The next prime is 15772323473. The reversal of 15772323472 is 27432327751.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15772323473) 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, 25941018 + ... + 25941625.

It is an arithmetic number, because the mean of its divisors is an integer number (1608361964).

Almost surely, 2^15772323472 is an apocalyptic number.

It is an amenable number.

15772323472 is an abundant number, since it is smaller than the sum of its proper divisors (16394915808).

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

15772323472 is a wasteful number, since it uses less digits than its factorization.

15772323472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51882670 (or 51882664 counting only the distinct ones).

The product of its digits is 493920, while the sum is 43.

The spelling of 15772323472 in words is "fifteen billion, seven hundred seventy-two million, three hundred twenty-three thousand, four hundred seventy-two".