18663000477 has 32 divisors (see below), whose sum is σ = 28683832320. Its totient is φ = 10674760320.

The previous prime is 18663000457. The next prime is 18663000487. The reversal of 18663000477 is 77400036681.

It is not a de Polignac number, because 18663000477 - 2⁶ = 18663000413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18663000407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108313 + ... + 221489.

It is an arithmetic number, because the mean of its divisors is an integer number (896369760).

Almost surely, 2^18663000477 is an apocalyptic number.

It is an amenable number.

18663000477 is a deficient number, since it is larger than the sum of its proper divisors (10020831843).

18663000477 is a wasteful number, since it uses less digits than its factorization.

18663000477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113473.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 18663000477 in words is "eighteen billion, six hundred sixty-three million, four hundred seventy-seven", and thus it is an aban number.