65645016452 has 24 divisors (see below), whose sum is σ = 121654091160. Its totient is φ = 30887267840.

The previous prime is 65645016439. The next prime is 65645016457. The reversal of 65645016452 is 25461054656.

It can be written as a sum of positive squares in 4 ways, for example, as 39722084416 + 25922932036 = 199304^2 + 161006^2 .

It is not an unprimeable number, because it can be changed into a prime (65645016457) 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, 424802 + ... + 558342.

It is an arithmetic number, because the mean of its divisors is an integer number (5068920465).

Almost surely, 2^65645016452 is an apocalyptic number.

It is an amenable number.

65645016452 is a deficient number, since it is larger than the sum of its proper divisors (56009074708).

65645016452 is a wasteful number, since it uses less digits than its factorization.

65645016452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140791 (or 140789 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 65645016452 in words is "sixty-five billion, six hundred forty-five million, sixteen thousand, four hundred fifty-two".