69138116181 has 24 divisors (see below), whose sum is σ = 102237591456. Its totient is φ = 44998601760.

The previous prime is 69138116171. The next prime is 69138116183. The reversal of 69138116181 is 18161183196.

69138116181 is a `hidden beast` number, since 6 + 9 + 13 + 8 + 11 + 618 + 1 = 666.

It is not a de Polignac number, because 69138116181 - 2⁷ = 69138116053 is a prime.

It is a super-2 number, since 2×69138116181² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69138116183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 786846 + ... + 870288.

It is an arithmetic number, because the mean of its divisors is an integer number (4259899644).

Almost surely, 2^69138116181 is an apocalyptic number.

It is an amenable number.

69138116181 is a deficient number, since it is larger than the sum of its proper divisors (33099475275).

69138116181 is a wasteful number, since it uses less digits than its factorization.

69138116181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85633 (or 85630 counting only the distinct ones).

The product of its digits is 62208, while the sum is 45.

The spelling of 69138116181 in words is "sixty-nine billion, one hundred thirty-eight million, one hundred sixteen thousand, one hundred eighty-one".