18061494063 has 4 divisors (see below), whose sum is σ = 24081992088. Its totient is φ = 12040996040.

The previous prime is 18061494047. The next prime is 18061494097. The reversal of 18061494063 is 36049416081.

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 18061494063 - 2⁴ = 18061494047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18061494013) 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, 3010249008 + ... + 3010249013.

It is an arithmetic number, because the mean of its divisors is an integer number (6020498022).

Almost surely, 2^18061494063 is an apocalyptic number.

18061494063 is a deficient number, since it is larger than the sum of its proper divisors (6020498025).

18061494063 is an equidigital number, since it uses as much as digits as its factorization.

18061494063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020498024.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 18061494063 in words is "eighteen billion, sixty-one million, four hundred ninety-four thousand, sixty-three".