15450128799 has 24 divisors (see below), whose sum is σ = 23973447600. Its totient is φ = 8824967424.

The previous prime is 15450128791. The next prime is 15450128801. The reversal of 15450128799 is 99782105451.

It is not a de Polignac number, because 15450128799 - 2³ = 15450128791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15450128791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354087 + ... + 395319.

It is an arithmetic number, because the mean of its divisors is an integer number (998893650).

Almost surely, 2^15450128799 is an apocalyptic number.

15450128799 is a deficient number, since it is larger than the sum of its proper divisors (8523318801).

15450128799 is a wasteful number, since it uses less digits than its factorization.

15450128799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43799 (or 43792 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 51.

The spelling of 15450128799 in words is "fifteen billion, four hundred fifty million, one hundred twenty-eight thousand, seven hundred ninety-nine".