65448319992 has 64 divisors (see below), whose sum is σ = 188995161600. Its totient is φ = 18666186240.

The previous prime is 65448319991. The next prime is 65448320011. The reversal of 65448319992 is 29991384456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65448319991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7286992 + ... + 7295967.

It is an arithmetic number, because the mean of its divisors is an integer number (2953049400).

Almost surely, 2^65448319992 is an apocalyptic number.

It is an amenable number.

65448319992 is an abundant number, since it is smaller than the sum of its proper divisors (123546841608).

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

65448319992 is a wasteful number, since it uses less digits than its factorization.

65448319992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14582996 (or 14582992 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 60.

The spelling of 65448319992 in words is "sixty-five billion, four hundred forty-eight million, three hundred nineteen thousand, nine hundred ninety-two".