64335432113 has 4 divisors (see below), whose sum is σ = 64337919348. Its totient is φ = 64332944880.

The previous prime is 64335432053. The next prime is 64335432149. The reversal of 64335432113 is 31123453346.

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 53131633009 + 11203799104 = 230503^2 + 105848^2 .

It is a cyclic number.

It is not a de Polignac number, because 64335432113 - 2¹⁶ = 64335366577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64335432173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204406 + ... + 1256687.

It is an arithmetic number, because the mean of its divisors is an integer number (16084479837).

Almost surely, 2^64335432113 is an apocalyptic number.

It is an amenable number.

64335432113 is a deficient number, since it is larger than the sum of its proper divisors (2487235).

64335432113 is a wasteful number, since it uses less digits than its factorization.

64335432113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487234.

The product of its digits is 77760, while the sum is 35.

Adding to 64335432113 its reverse (31123453346), we get a palindrome (95458885459).

The spelling of 64335432113 in words is "sixty-four billion, three hundred thirty-five million, four hundred thirty-two thousand, one hundred thirteen".