63535501613 has 4 divisors (see below), whose sum is σ = 63537519648. Its totient is φ = 63533483580.

The previous prime is 63535501609. The next prime is 63535501639. The reversal of 63535501613 is 31610553536.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63535501613 - 2² = 63535501609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63535501663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961031 + ... + 1025012.

It is an arithmetic number, because the mean of its divisors is an integer number (15884379912).

Almost surely, 2^63535501613 is an apocalyptic number.

It is an amenable number.

63535501613 is a deficient number, since it is larger than the sum of its proper divisors (2018035).

63535501613 is a wasteful number, since it uses less digits than its factorization.

63535501613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018034.

The product of its (nonzero) digits is 121500, while the sum is 38.

The spelling of 63535501613 in words is "sixty-three billion, five hundred thirty-five million, five hundred one thousand, six hundred thirteen".