64115143633 has 4 divisors (see below), whose sum is σ = 64117478308. Its totient is φ = 64112808960.

The previous prime is 64115143621. The next prime is 64115143639. The reversal of 64115143633 is 33634151146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17204781889 + 46910361744 = 131167^2 + 216588^2 .

It is a cyclic number.

It is not a de Polignac number, because 64115143633 - 2⁵ = 64115143601 is a prime.

It is a super-2 number, since 2×64115143633² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64115143592 and 64115143601.

It is not an unprimeable number, because it can be changed into a prime (64115143639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125648 + ... + 1181233.

It is an arithmetic number, because the mean of its divisors is an integer number (16029369577).

Almost surely, 2^64115143633 is an apocalyptic number.

It is an amenable number.

64115143633 is a deficient number, since it is larger than the sum of its proper divisors (2334675).

64115143633 is a wasteful number, since it uses less digits than its factorization.

64115143633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334674.

The product of its digits is 77760, while the sum is 37.

Adding to 64115143633 its reverse (33634151146), we get a palindrome (97749294779).

The spelling of 64115143633 in words is "sixty-four billion, one hundred fifteen million, one hundred forty-three thousand, six hundred thirty-three".