65576823664 has 40 divisors (see below), whose sum is σ = 138672374400. Its totient is φ = 29793278400.

The previous prime is 65576823659. The next prime is 65576823667. The reversal of 65576823664 is 46632867556.

It is a junction number, because it is equal to n+sod(n) for n = 65576823599 and 65576823608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65576823667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280669 + ... + 458179.

It is an arithmetic number, because the mean of its divisors is an integer number (3466809360).

Almost surely, 2^65576823664 is an apocalyptic number.

It is an amenable number.

65576823664 is an abundant number, since it is smaller than the sum of its proper divisors (73095550736).

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

65576823664 is a wasteful number, since it uses less digits than its factorization.

65576823664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179629 (or 179623 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 58.

The spelling of 65576823664 in words is "sixty-five billion, five hundred seventy-six million, eight hundred twenty-three thousand, six hundred sixty-four".