63387777276 has 144 divisors (see below), whose sum is σ = 172348176000. Its totient is φ = 19583980416.

The previous prime is 63387777263. The next prime is 63387777283. The reversal of 63387777276 is 67277778336.

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 in 47 ways as a sum of consecutive naturals, for example, 6823731 + ... + 6833013.

Almost surely, 2^63387777276 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 63387777276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86174088000).

63387777276 is an abundant number, since it is smaller than the sum of its proper divisors (108960398724).

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

63387777276 is a wasteful number, since it uses less digits than its factorization.

63387777276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528 (or 9523 counting only the distinct ones).

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

The spelling of 63387777276 in words is "sixty-three billion, three hundred eighty-seven million, seven hundred seventy-seven thousand, two hundred seventy-six".