18112154922503 has 4 divisors (see below), whose sum is σ = 18121961180400. Its totient is φ = 18102348664608.

The previous prime is 18112154922487. The next prime is 18112154922571. The reversal of 18112154922503 is 30522945121181.

It is a happy number.

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 18112154922503 - 2⁴ = 18112154922487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18112154922593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4903126178 + ... + 4903129871.

It is an arithmetic number, because the mean of its divisors is an integer number (4530490295100).

Almost surely, 2^{18112154922503} is an apocalyptic number.

18112154922503 is a deficient number, since it is larger than the sum of its proper divisors (9806257897).

18112154922503 is an equidigital number, since it uses as much as digits as its factorization.

18112154922503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9806257896.

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 18112154922503 in words is "eighteen trillion, one hundred twelve billion, one hundred fifty-four million, nine hundred twenty-two thousand, five hundred three".