18273663450215 has 8 divisors (see below), whose sum is σ = 22024997005680. Its totient is φ = 14554530183232.

The previous prime is 18273663450199. The next prime is 18273663450247. The reversal of 18273663450215 is 51205436637281.

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 18273663450215 - 2⁴ = 18273663450199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8050070870 + ... + 8050073139.

It is an arithmetic number, because the mean of its divisors is an integer number (2753124625710).

Almost surely, 2^{18273663450215} is an apocalyptic number.

18273663450215 is a deficient number, since it is larger than the sum of its proper divisors (3751333555465).

18273663450215 is a wasteful number, since it uses less digits than its factorization.

18273663450215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16100144241.

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 18273663450215 in words is "eighteen trillion, two hundred seventy-three billion, six hundred sixty-three million, four hundred fifty thousand, two hundred fifteen".