64265443553 has 6 divisors (see below), whose sum is σ = 68268135846. Its totient is φ = 60485123072.

The previous prime is 64265443549. The next prime is 64265443577. The reversal of 64265443553 is 35534456246.

It can be written as a sum of positive squares in 3 ways, for example, as 49369729249 + 14895714304 = 222193^2 + 122048^2 .

It is not a de Polignac number, because 64265443553 - 2² = 64265443549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64265443498 and 64265443507.

It is not an unprimeable number, because it can be changed into a prime (64265449553) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 111185600 + ... + 111186177.

It is an arithmetic number, because the mean of its divisors is an integer number (11378022641).

Almost surely, 2^64265443553 is an apocalyptic number.

It is an amenable number.

64265443553 is a deficient number, since it is larger than the sum of its proper divisors (4002692293).

64265443553 is a wasteful number, since it uses less digits than its factorization.

64265443553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222371811 (or 222371794 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 47.

Adding to 64265443553 its reverse (35534456246), we get a palindrome (99799899799).

The spelling of 64265443553 in words is "sixty-four billion, two hundred sixty-five million, four hundred forty-three thousand, five hundred fifty-three".