63381777072 has 40 divisors (see below), whose sum is σ = 166511455680. Its totient is φ = 20769168960.

The previous prime is 63381777071. The next prime is 63381777113. The reversal of 63381777072 is 27077718336.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (63381777071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11187454 + ... + 11193117.

It is an arithmetic number, because the mean of its divisors is an integer number (4162786392).

Almost surely, 2^63381777072 is an apocalyptic number.

It is an amenable number.

63381777072 is an abundant number, since it is smaller than the sum of its proper divisors (103129678608).

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

63381777072 is a wasteful number, since it uses less digits than its factorization.

63381777072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22380641 (or 22380635 counting only the distinct ones).

The product of its (nonzero) digits is 2074464, while the sum is 51.

The spelling of 63381777072 in words is "sixty-three billion, three hundred eighty-one million, seven hundred seventy-seven thousand, seventy-two".