65571056796 has 384 divisors, whose sum is σ = 199264665600. Its totient is φ = 16351211520.

The previous prime is 65571056773. The next prime is 65571056801. The reversal of 65571056796 is 69765017556.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 114835191 + ... + 114835761.

It is an arithmetic number, because the mean of its divisors is an integer number (518918400).

Almost surely, 2^65571056796 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 65571056796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99632332800).

65571056796 is an abundant number, since it is smaller than the sum of its proper divisors (133693608804).

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

65571056796 is a wasteful number, since it uses less digits than its factorization.

65571056796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 11907000, while the sum is 57.

The spelling of 65571056796 in words is "sixty-five billion, five hundred seventy-one million, fifty-six thousand, seven hundred ninety-six".