18040128807 has 8 divisors (see below), whose sum is σ = 24099675120. Its totient is φ = 12003667520.

The previous prime is 18040128793. The next prime is 18040128823. The reversal of 18040128807 is 70882104081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18040128807 - 2⁷ = 18040128679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18040128857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5769432 + ... + 5772557.

It is an arithmetic number, because the mean of its divisors is an integer number (3012459390).

Almost surely, 2^18040128807 is an apocalyptic number.

18040128807 is a deficient number, since it is larger than the sum of its proper divisors (6059546313).

18040128807 is a wasteful number, since it uses less digits than its factorization.

18040128807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11542513.

The product of its (nonzero) digits is 28672, while the sum is 39.

The spelling of 18040128807 in words is "eighteen billion, forty million, one hundred twenty-eight thousand, eight hundred seven".