65315822450 has 54 divisors (see below), whose sum is σ = 124288889031. Its totient is φ = 25537198080.

The previous prime is 65315822449. The next prime is 65315822459. The reversal of 65315822450 is 5422851356.

65315822450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 16912742401 + 48403080049 = 130049^2 + 220007^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=180715.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65315822398 and 65315822407.

It is not an unprimeable number, because it can be changed into a prime (65315822459) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 84935666 + ... + 84936434.

Almost surely, 2^65315822450 is an apocalyptic number.

65315822450 is a deficient number, since it is larger than the sum of its proper divisors (58973066581).

65315822450 is an frugal number, since it uses more digits than its factorization.

65315822450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 65315822450 in words is "sixty-five billion, three hundred fifteen million, eight hundred twenty-two thousand, four hundred fifty".