153991547728 has 20 divisors (see below), whose sum is σ = 305635664628. Its totient is φ = 75117827840.

The previous prime is 153991547683. The next prime is 153991547767. The reversal of 153991547728 is 827745199351.

It can be written as a sum of positive squares in 2 ways, for example, as 64379927824 + 89611619904 = 253732^2 + 299352^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117370951 + ... + 117372262.

Almost surely, 2^153991547728 is an apocalyptic number.

It is an amenable number.

153991547728 is a deficient number, since it is larger than the sum of its proper divisors (151644116900).

153991547728 is a wasteful number, since it uses less digits than its factorization.

153991547728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234743262 (or 234743256 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 61.

The spelling of 153991547728 in words is "one hundred fifty-three billion, nine hundred ninety-one million, five hundred forty-seven thousand, seven hundred twenty-eight".