69139083168 has 108 divisors (see below), whose sum is σ = 204166601730. Its totient is φ = 23046291072.

The previous prime is 69139083163. The next prime is 69139083179. The reversal of 69139083168 is 86138093196.

69139083168 is a `hidden beast` number, since 6 + 91 + 390 + 8 + 3 + 168 = 666.

It can be written as a sum of positive squares in only one way, i.e., 66681699984 + 2457383184 = 258228^2 + 49572^2 .

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (69139083163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45298 + ... + 374606.

Almost surely, 2^69139083168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69139083168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102083300865).

69139083168 is an abundant number, since it is smaller than the sum of its proper divisors (135027518562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69139083168 is an frugal number, since it uses more digits than its factorization.

69139083168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329343 (or 329314 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 69139083168 in words is "sixty-nine billion, one hundred thirty-nine million, eighty-three thousand, one hundred sixty-eight".