18124211465 has 8 divisors (see below), whose sum is σ = 21869215368. Its totient is φ = 14419261440.

The previous prime is 18124211459. The next prime is 18124211467. The reversal of 18124211465 is 56411242181.

It can be written as a sum of positive squares in 4 ways, for example, as 486246601 + 17637964864 = 22051^2 + 132808^2 .

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

It is not a de Polignac number, because 18124211465 - 2⁴ = 18124211449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18124211467) 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, 10012472 + ... + 10014281.

It is an arithmetic number, because the mean of its divisors is an integer number (2733651921).

Almost surely, 2^18124211465 is an apocalyptic number.

It is an amenable number.

18124211465 is a deficient number, since it is larger than the sum of its proper divisors (3745003903).

18124211465 is a wasteful number, since it uses less digits than its factorization.

18124211465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20026939.

The product of its digits is 15360, while the sum is 35.

The spelling of 18124211465 in words is "eighteen billion, one hundred twenty-four million, two hundred eleven thousand, four hundred sixty-five".