15725989268448 has 48 divisors (see below), whose sum is σ = 41280966674640. Its totient is φ = 5241965331456.

The previous prime is 15725989268447. The next prime is 15725989268453. The reversal of 15725989268448 is 84486298952751.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15725989268441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20465988 + ... + 21220476.

It is an arithmetic number, because the mean of its divisors is an integer number (860020139055).

Almost surely, 2^{15725989268448} is an apocalyptic number.

It is an amenable number.

15725989268448 is an abundant number, since it is smaller than the sum of its proper divisors (25554977406192).

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

15725989268448 is a wasteful number, since it uses less digits than its factorization.

15725989268448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971619 (or 971611 counting only the distinct ones).

The product of its digits is 2786918400, while the sum is 78.

The spelling of 15725989268448 in words is "fifteen trillion, seven hundred twenty-five billion, nine hundred eighty-nine million, two hundred sixty-eight thousand, four hundred forty-eight".