18226140829215 has 32 divisors (see below), whose sum is σ = 31913256600576. Its totient is φ = 8809040031360.

The previous prime is 18226140829199. The next prime is 18226140829291. The reversal of 18226140829215 is 51292804162281.

It is not a de Polignac number, because 18226140829215 - 2⁴ = 18226140829199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174177127 + ... + 174281736.

It is an arithmetic number, because the mean of its divisors is an integer number (997289268768).

Almost surely, 2^{18226140829215} is an apocalyptic number.

18226140829215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18226140829215 is a deficient number, since it is larger than the sum of its proper divisors (13687115771361).

18226140829215 is a wasteful number, since it uses less digits than its factorization.

18226140829215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348459199.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 18226140829215 in words is "eighteen trillion, two hundred twenty-six billion, one hundred forty million, eight hundred twenty-nine thousand, two hundred fifteen".