63941075613 has 12 divisors (see below), whose sum is σ = 92361984000. Its totient is φ = 42626159496.

The previous prime is 63941075593. The next prime is 63941075621. The reversal of 63941075613 is 31657014936.

It is a happy number.

63941075613 is a `hidden beast` number, since 639 + 4 + 1 + 0 + 7 + 5 + 6 + 1 + 3 = 666.

It is not a de Polignac number, because 63941075613 - 2⁹ = 63941075101 is a prime.

It is a super-2 number, since 2×63941075613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63941075683) 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, 321138 + ... + 480636.

It is an arithmetic number, because the mean of its divisors is an integer number (7696832000).

Almost surely, 2^63941075613 is an apocalyptic number.

It is an amenable number.

63941075613 is a deficient number, since it is larger than the sum of its proper divisors (28420908387).

63941075613 is a wasteful number, since it uses less digits than its factorization.

63941075613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204048 (or 204045 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 63941075613 in words is "sixty-three billion, nine hundred forty-one million, seventy-five thousand, six hundred thirteen".