63781367628 has 48 divisors (see below), whose sum is σ = 162678096000. Its totient is φ = 19288934400.

The previous prime is 63781367609. The next prime is 63781367647. The reversal of 63781367628 is 82676318736.

It is an interprime number because it is at equal distance from previous prime (63781367609) and next prime (63781367647).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418293 + ... + 550028.

It is an arithmetic number, because the mean of its divisors is an integer number (3389127000).

Almost surely, 2^63781367628 is an apocalyptic number.

It is an amenable number.

63781367628 is an abundant number, since it is smaller than the sum of its proper divisors (98896728372).

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

63781367628 is a wasteful number, since it uses less digits than its factorization.

63781367628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968838 (or 968836 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 57.

The spelling of 63781367628 in words is "sixty-three billion, seven hundred eighty-one million, three hundred sixty-seven thousand, six hundred twenty-eight".