65783823952 has 80 divisors (see below), whose sum is σ = 158973825024. Its totient is φ = 25619184000.

The previous prime is 65783823949. The next prime is 65783823971. The reversal of 65783823952 is 25932838756.

It is a super-2 number, since 2×65783823952² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3280677 + ... + 3300667.

Almost surely, 2^65783823952 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 65783823952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79486912512).

65783823952 is an abundant number, since it is smaller than the sum of its proper divisors (93190001072).

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

65783823952 is a wasteful number, since it uses less digits than its factorization.

65783823952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22688 (or 22682 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 58.

The spelling of 65783823952 in words is "sixty-five billion, seven hundred eighty-three million, eight hundred twenty-three thousand, nine hundred fifty-two".