153305472321 has 24 divisors (see below), whose sum is σ = 224300119680. Its totient is φ = 100884809376.

The previous prime is 153305472317. The next prime is 153305472323. The reversal of 153305472321 is 123274503351.

153305472321 is a `hidden beast` number, since 1 + 53 + 30 + 547 + 2 + 32 + 1 = 666.

It is not a de Polignac number, because 153305472321 - 2² = 153305472317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (153305472323) 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, 3084550 + ... + 3133856.

It is an arithmetic number, because the mean of its divisors is an integer number (9345838320).

Almost surely, 2^153305472321 is an apocalyptic number.

It is an amenable number.

153305472321 is a deficient number, since it is larger than the sum of its proper divisors (70994647359).

153305472321 is a wasteful number, since it uses less digits than its factorization.

153305472321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53765 (or 53762 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

Adding to 153305472321 its reverse (123274503351), we get a palindrome (276579975672).

The spelling of 153305472321 in words is "one hundred fifty-three billion, three hundred five million, four hundred seventy-two thousand, three hundred twenty-one".