18104747051 has 4 divisors (see below), whose sum is σ = 18159444504. Its totient is φ = 18050049600.

The previous prime is 18104747039. The next prime is 18104747123. The reversal of 18104747051 is 15074740181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18104747051 - 2¹⁰ = 18104746027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18104746996 and 18104747014.

It is not an unprimeable number, because it can be changed into a prime (18104747251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27348230 + ... + 27348891.

It is an arithmetic number, because the mean of its divisors is an integer number (4539861126).

Almost surely, 2^18104747051 is an apocalyptic number.

18104747051 is a deficient number, since it is larger than the sum of its proper divisors (54697453).

18104747051 is an equidigital number, since it uses as much as digits as its factorization.

18104747051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54697452.

The product of its (nonzero) digits is 31360, while the sum is 38.

The spelling of 18104747051 in words is "eighteen billion, one hundred four million, seven hundred forty-seven thousand, fifty-one".