18039554655 has 32 divisors (see below), whose sum is σ = 30448535040. Its totient is φ = 9094884480.

The previous prime is 18039554639. The next prime is 18039554657. The reversal of 18039554655 is 55645593081.

It is not a de Polignac number, because 18039554655 - 2⁴ = 18039554639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18039554598 and 18039554607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18039554657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62734 + ... + 200036.

It is an arithmetic number, because the mean of its divisors is an integer number (951516720).

Almost surely, 2^18039554655 is an apocalyptic number.

18039554655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18039554655 is a deficient number, since it is larger than the sum of its proper divisors (12408980385).

18039554655 is a wasteful number, since it uses less digits than its factorization.

18039554655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137791.

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 18039554655 in words is "eighteen billion, thirty-nine million, five hundred fifty-four thousand, six hundred fifty-five".