18038063635551 has 12 divisors (see below), whose sum is σ = 26084555143920. Its totient is φ = 12011726063040.

The previous prime is 18038063635547. The next prime is 18038063635597. The reversal of 18038063635551 is 15553636083081.

18038063635551 is a `hidden beast` number, since 1 + 8 + 0 + 3 + 80 + 6 + 3 + 6 + 3 + 5 + 551 = 666.

It is not a de Polignac number, because 18038063635551 - 2² = 18038063635547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038063635511) 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, 1137466131 + ... + 1137481988.

It is an arithmetic number, because the mean of its divisors is an integer number (2173712928660).

Almost surely, 2^{18038063635551} is an apocalyptic number.

18038063635551 is a deficient number, since it is larger than the sum of its proper divisors (8046491508369).

18038063635551 is a wasteful number, since it uses less digits than its factorization.

18038063635551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274949006 (or 2274949003 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 54.

The spelling of 18038063635551 in words is "eighteen trillion, thirty-eight billion, sixty-three million, six hundred thirty-five thousand, five hundred fifty-one".