215451103024423 has 16 divisors (see below), whose sum is σ = 257235051902976. Its totient is φ = 176562005461920.

The previous prime is 215451103024403. The next prime is 215451103024429. The reversal of 215451103024423 is 324420301154512.

It is a cyclic number.

It is not a de Polignac number, because 215451103024423 - 2³⁷ = 215313664070951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215451103024429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5981079736 + ... + 5981115757.

It is an arithmetic number, because the mean of its divisors is an integer number (16077190743936).

Almost surely, 2^{215451103024423} is an apocalyptic number.

215451103024423 is a deficient number, since it is larger than the sum of its proper divisors (41783948878553).

215451103024423 is a wasteful number, since it uses less digits than its factorization.

215451103024423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11962195614.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 215451103024423 its reverse (324420301154512), we get a palindrome (539871404178935).

The spelling of 215451103024423 in words is "two hundred fifteen trillion, four hundred fifty-one billion, one hundred three million, twenty-four thousand, four hundred twenty-three".