18727254063 has 12 divisors (see below), whose sum is σ = 30914832208. Its totient is φ = 10701288000.

The previous prime is 18727254059. The next prime is 18727254083. The reversal of 18727254063 is 36045272781.

18727254063 is a `hidden beast` number, since 1 + 87 + 27 + 2 + 540 + 6 + 3 = 666.

It is not a de Polignac number, because 18727254063 - 2² = 18727254059 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 (18727254053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148628938 + ... + 148629063.

Almost surely, 2^18727254063 is an apocalyptic number.

18727254063 is a deficient number, since it is larger than the sum of its proper divisors (12187578145).

18727254063 is a wasteful number, since it uses less digits than its factorization.

18727254063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297258014 (or 297258011 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 18727254063 in words is "eighteen billion, seven hundred twenty-seven million, two hundred fifty-four thousand, sixty-three".