18055418471 has 8 divisors (see below), whose sum is σ = 18559870320. Its totient is φ = 17551833408.

The previous prime is 18055418467. The next prime is 18055418533. The reversal of 18055418471 is 17481455081.

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 18055418471 - 2² = 18055418467 is a prime.

It is a super-3 number, since 3×18055418471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18055418411) 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, 174341 + ... + 257886.

It is an arithmetic number, because the mean of its divisors is an integer number (2319983790).

Almost surely, 2^18055418471 is an apocalyptic number.

18055418471 is a deficient number, since it is larger than the sum of its proper divisors (504451849).

18055418471 is a wasteful number, since it uses less digits than its factorization.

18055418471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433393.

The product of its (nonzero) digits is 179200, while the sum is 44.

The spelling of 18055418471 in words is "eighteen billion, fifty-five million, four hundred eighteen thousand, four hundred seventy-one".