18033272157 has 8 divisors (see below), whose sum is σ = 24045023584. Its totient is φ = 12021851088.

The previous prime is 18033272119. The next prime is 18033272219. The reversal of 18033272157 is 75127233081.

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

It is not a de Polignac number, because 18033272157 - 2¹⁶ = 18033206621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18033272057) 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, 106878 + ... + 217920.

It is an arithmetic number, because the mean of its divisors is an integer number (3005627948).

Almost surely, 2^18033272157 is an apocalyptic number.

It is an amenable number.

18033272157 is a deficient number, since it is larger than the sum of its proper divisors (6011751427).

18033272157 is a wasteful number, since it uses less digits than its factorization.

18033272157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165179.

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 18033272157 in words is "eighteen billion, thirty-three million, two hundred seventy-two thousand, one hundred fifty-seven".