65944682496 has 608 divisors, whose sum is σ = 245617973760. Its totient is φ = 17128488960.

The previous prime is 65944682467. The next prime is 65944682537. The reversal of 65944682496 is 69428644956.

65944682496 is a `hidden beast` number, since 65 + 9 + 4 + 4 + 6 + 82 + 496 = 666.

It is a super-2 number, since 2×65944682496² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5994971131 + ... + 5994971141.

Almost surely, 2^65944682496 is an apocalyptic number.

65944682496 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65944682496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122808986880).

65944682496 is an abundant number, since it is smaller than the sum of its proper divisors (179673291264).

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

65944682496 is an frugal number, since it uses more digits than its factorization.

65944682496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 23 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 63.

The spelling of 65944682496 in words is "sixty-five billion, nine hundred forty-four million, six hundred eighty-two thousand, four hundred ninety-six".