18055535901 has 8 divisors (see below), whose sum is σ = 25925897760. Its totient is φ = 11111098992.

The previous prime is 18055535893. The next prime is 18055535903. The reversal of 18055535901 is 10953555081.

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

It is not a de Polignac number, because 18055535901 - 2³ = 18055535893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18055535903) 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, 231481191 + ... + 231481268.

It is an arithmetic number, because the mean of its divisors is an integer number (3240737220).

Almost surely, 2^18055535901 is an apocalyptic number.

It is an amenable number.

18055535901 is a deficient number, since it is larger than the sum of its proper divisors (7870361859).

18055535901 is a wasteful number, since it uses less digits than its factorization.

18055535901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462962475.

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 18055535901 in words is "eighteen billion, fifty-five million, five hundred thirty-five thousand, nine hundred one".