69812066808 has 128 divisors (see below), whose sum is σ = 214164057600. Its totient is φ = 21155113440.

The previous prime is 69812066801. The next prime is 69812066809. The reversal of 69812066808 is 80866021896.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69812066801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11085 + ... + 373827.

It is an arithmetic number, because the mean of its divisors is an integer number (1673156700).

Almost surely, 2^69812066808 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 69812066808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107082028800).

69812066808 is an abundant number, since it is smaller than the sum of its proper divisors (144351990792).

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

69812066808 is a wasteful number, since it uses less digits than its factorization.

69812066808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362781 (or 362759 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 69812066808 in words is "sixty-nine billion, eight hundred twelve million, sixty-six thousand, eight hundred eight".