64361051613 has 12 divisors (see below), whose sum is σ = 93241831228. Its totient is φ = 42780044160.

The previous prime is 64361051561. The next prime is 64361051633. The reversal of 64361051613 is 31615016346.

64361051613 is a `hidden beast` number, since 6 + 4 + 36 + 1 + 0 + 5 + 1 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6163349049 + 58197702564 = 78507^2 + 241242^2 .

It is not a de Polignac number, because 64361051613 - 2⁶ = 64361051549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64361051633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10607098 + ... + 10613163.

Almost surely, 2^64361051613 is an apocalyptic number.

It is an amenable number.

64361051613 is a deficient number, since it is larger than the sum of its proper divisors (28880779615).

64361051613 is a wasteful number, since it uses less digits than its factorization.

64361051613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21220604 (or 21220601 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 64361051613 its reverse (31615016346), we get a palindrome (95976067959).

The spelling of 64361051613 in words is "sixty-four billion, three hundred sixty-one million, fifty-one thousand, six hundred thirteen".