65796786880 has 448 divisors, whose sum is σ = 184343040000. Its totient is φ = 22140518400.

The previous prime is 65796786827. The next prime is 65796786883. The reversal of 65796786880 is 8868769756.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65796786883) 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 63 ways as a sum of consecutive naturals, for example, 330637021 + ... + 330637219.

It is an arithmetic number, because the mean of its divisors is an integer number (411480000).

Almost surely, 2^65796786880 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 65796786880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92171520000).

65796786880 is an abundant number, since it is smaller than the sum of its proper divisors (118546253120).

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

65796786880 is a wasteful number, since it uses less digits than its factorization.

65796786880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 243855360, while the sum is 70.

The spelling of 65796786880 in words is "sixty-five billion, seven hundred ninety-six million, seven hundred eighty-six thousand, eight hundred eighty".