18126629400165 has 32 divisors (see below), whose sum is σ = 34072992890496. Its totient is φ = 8112617352960.

The previous prime is 18126629400163. The next prime is 18126629400193. The reversal of 18126629400165 is 56100492662181.

It is not a de Polignac number, because 18126629400165 - 2¹ = 18126629400163 is a prime.

It is a super-2 number, since 2×18126629400165² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18126629400161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4225319394 + ... + 4225323683.

It is an arithmetic number, because the mean of its divisors is an integer number (1064781027828).

Almost surely, 2^{18126629400165} is an apocalyptic number.

18126629400165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18126629400165 is a deficient number, since it is larger than the sum of its proper divisors (15946363490331).

18126629400165 is a wasteful number, since it uses less digits than its factorization.

18126629400165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450643109.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 18126629400165 in words is "eighteen trillion, one hundred twenty-six billion, six hundred twenty-nine million, four hundred thousand, one hundred sixty-five".