69382720836 has 243 divisors, whose sum is σ = 209429476893. Its totient is φ = 19344536640.

The previous prime is 69382720739. The next prime is 69382720861. The reversal of 69382720836 is 63802728396.

It is a happy number.

The square root of 69382720836 is 263406.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10263716100 + 59119004736 = 101310^2 + 243144^2 .

It is an unprimeable number.

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 80 ways as a sum of consecutive naturals, for example, 226002195 + ... + 226002501.

Almost surely, 2^69382720836 is an apocalyptic number.

69382720836 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

69382720836 is the 263406-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69382720836

69382720836 is an abundant number, since it is smaller than the sum of its proper divisors (140046756057).

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

69382720836 is a wasteful number, since it uses less digits than its factorization.

69382720836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 69382720836 in words is "sixty-nine billion, three hundred eighty-two million, seven hundred twenty thousand, eight hundred thirty-six".