15423324115421 has 8 divisors (see below), whose sum is σ = 15871720258944. Its totient is φ = 14979937984960.

The previous prime is 15423324115343. The next prime is 15423324115453. The reversal of 15423324115421 is 12451142332451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15423324115421 - 2¹⁰ = 15423324114397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15423324115471) 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, 1252497020 + ... + 1252509333.

It is an arithmetic number, because the mean of its divisors is an integer number (1983965032368).

Almost surely, 2^{15423324115421} is an apocalyptic number.

It is an amenable number.

15423324115421 is a deficient number, since it is larger than the sum of its proper divisors (448396143523).

15423324115421 is a wasteful number, since it uses less digits than its factorization.

15423324115421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505006531.

The product of its digits is 115200, while the sum is 38.

Adding to 15423324115421 its reverse (12451142332451), we get a palindrome (27874466447872).

The spelling of 15423324115421 in words is "fifteen trillion, four hundred twenty-three billion, three hundred twenty-four million, one hundred fifteen thousand, four hundred twenty-one".