63136568821 has 8 divisors (see below), whose sum is σ = 67150266624. Its totient is φ = 59156180160.

The previous prime is 63136568801. The next prime is 63136568839. The reversal of 63136568821 is 12886563136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63136568821 - 2¹³ = 63136560629 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 (63136568801) 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 7 ways as a sum of consecutive naturals, for example, 8323375 + ... + 8330956.

It is an arithmetic number, because the mean of its divisors is an integer number (8393783328).

Almost surely, 2^63136568821 is an apocalyptic number.

It is an amenable number.

63136568821 is a deficient number, since it is larger than the sum of its proper divisors (4013697803).

63136568821 is a wasteful number, since it uses less digits than its factorization.

63136568821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16654571.

The product of its digits is 1244160, while the sum is 49.

The spelling of 63136568821 in words is "sixty-three billion, one hundred thirty-six million, five hundred sixty-eight thousand, eight hundred twenty-one".