63244364778 has 36 divisors (see below), whose sum is σ = 159401615490. Its totient is φ = 18069818256.

The previous prime is 63244364761. The next prime is 63244364779. The reversal of 63244364778 is 87746344236.

It can be written as a sum of positive squares in only one way, i.e., 43370978049 + 19873386729 = 208257^2 + 140973^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63244364779) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35851933 + ... + 35853696.

Almost surely, 2^63244364778 is an apocalyptic number.

63244364778 is an abundant number, since it is smaller than the sum of its proper divisors (96157250712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63244364778 is a wasteful number, since it uses less digits than its factorization.

63244364778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71705651 (or 71705641 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 54.

The spelling of 63244364778 in words is "sixty-three billion, two hundred forty-four million, three hundred sixty-four thousand, seven hundred seventy-eight".