63767773872 has 120 divisors (see below), whose sum is σ = 195047428368. Its totient is φ = 19287590400.

The previous prime is 63767773859. The next prime is 63767773933. The reversal of 63767773872 is 27837776736.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 819738 + ... + 894150.

Almost surely, 2^63767773872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63767773872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97523714184).

63767773872 is an abundant number, since it is smaller than the sum of its proper divisors (131279654496).

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

63767773872 is a wasteful number, since it uses less digits than its factorization.

63767773872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74979 (or 74970 counting only the distinct ones).

The product of its digits is 87127488, while the sum is 63.

The spelling of 63767773872 in words is "sixty-three billion, seven hundred sixty-seven million, seven hundred seventy-three thousand, eight hundred seventy-two".