18387222050005 has 8 divisors (see below), whose sum is σ = 22064714085024. Its totient is φ = 14709745890000.

The previous prime is 18387222049979. The next prime is 18387222050017. The reversal of 18387222050005 is 50005022278381.

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

It is not a de Polignac number, because 18387222050005 - 2⁷ = 18387222049877 is a prime.

It is a Duffinian number.

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, 1251471 + ... + 6191980.

It is an arithmetic number, because the mean of its divisors is an integer number (2758089260628).

Almost surely, 2^{18387222050005} is an apocalyptic number.

It is an amenable number.

18387222050005 is a deficient number, since it is larger than the sum of its proper divisors (3677492035019).

18387222050005 is an equidigital number, since it uses as much as digits as its factorization.

18387222050005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937507.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 18387222050005 in words is "eighteen trillion, three hundred eighty-seven billion, two hundred twenty-two million, fifty thousand, five".