15315543472448 has 56 divisors (see below), whose sum is σ = 32429586875520. Its totient is φ = 7155351198720.

The previous prime is 15315543472447. The next prime is 15315543472451. The reversal of 15315543472448 is 84427434551351.

It is a super-2 number, since 2×15315543472448² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15315543472393 and 15315543472402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15315543472447) 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, 86178488 + ... + 86356023.

Almost surely, 2^{15315543472448} is an apocalyptic number.

It is an amenable number.

15315543472448 is an abundant number, since it is smaller than the sum of its proper divisors (17114043403072).

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

15315543472448 is a wasteful number, since it uses less digits than its factorization.

15315543472448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172534615 (or 172534605 counting only the distinct ones).

The product of its digits is 32256000, while the sum is 56.

The spelling of 15315543472448 in words is "fifteen trillion, three hundred fifteen billion, five hundred forty-three million, four hundred seventy-two thousand, four hundred forty-eight".