63901950836 has 6 divisors (see below), whose sum is σ = 111828413970. Its totient is φ = 31950975416.

The previous prime is 63901950829. The next prime is 63901950841. The reversal of 63901950836 is 63805910936.

It can be written as a sum of positive squares in only one way, i.e., 56266686436 + 7635264400 = 237206^2 + 87380^2 .

It is a super-2 number, since 2×63901950836² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7987743851 + ... + 7987743858.

It is an arithmetic number, because the mean of its divisors is an integer number (18638068995).

Almost surely, 2^63901950836 is an apocalyptic number.

It is an amenable number.

63901950836 is a deficient number, since it is larger than the sum of its proper divisors (47926463134).

63901950836 is a wasteful number, since it uses less digits than its factorization.

63901950836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15975487713 (or 15975487711 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 63901950836 in words is "sixty-three billion, nine hundred one million, nine hundred fifty thousand, eight hundred thirty-six".