69787278792 has 384 divisors, whose sum is σ = 241964236800. Its totient is φ = 17647027200.

The previous prime is 69787278773. The next prime is 69787278797. The reversal of 69787278792 is 29787278796.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 69787278792.

It is not an unprimeable number, because it can be changed into a prime (69787278797) 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 95 ways as a sum of consecutive naturals, for example, 33057817 + ... + 33059927.

It is an arithmetic number, because the mean of its divisors is an integer number (630115200).

Almost surely, 2^69787278792 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 69787278792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120982118400).

69787278792 is an abundant number, since it is smaller than the sum of its proper divisors (172176958008).

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

69787278792 is a wasteful number, since it uses less digits than its factorization.

69787278792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2290 counting only the distinct ones).

The product of its digits is 298722816, while the sum is 72.

The spelling of 69787278792 in words is "sixty-nine billion, seven hundred eighty-seven million, two hundred seventy-eight thousand, seven hundred ninety-two".