18071429217 has 8 divisors (see below), whose sum is σ = 24239522496. Its totient is φ = 11975477712.

The previous prime is 18071429213. The next prime is 18071429221. The reversal of 18071429217 is 71292417081.

It is an interprime number because it is at equal distance from previous prime (18071429213) and next prime (18071429221).

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

It is not a de Polignac number, because 18071429217 - 2² = 18071429213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18071429213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18034858 + ... + 18035859.

It is an arithmetic number, because the mean of its divisors is an integer number (3029940312).

Almost surely, 2^18071429217 is an apocalyptic number.

It is an amenable number.

18071429217 is a deficient number, since it is larger than the sum of its proper divisors (6168093279).

18071429217 is a wasteful number, since it uses less digits than its factorization.

18071429217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36070887.

The product of its (nonzero) digits is 56448, while the sum is 42.

The spelling of 18071429217 in words is "eighteen billion, seventy-one million, four hundred twenty-nine thousand, two hundred seventeen".