63993277872 has 60 divisors (see below), whose sum is σ = 180233077440. Its totient is φ = 21195218304.

The previous prime is 63993277853. The next prime is 63993277877. The reversal of 63993277872 is 27877239936.

It is a super-2 number, since 2×63993277872² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63993277877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1392672 + ... + 1437887.

It is an arithmetic number, because the mean of its divisors is an integer number (3003884624).

Almost surely, 2^63993277872 is an apocalyptic number.

It is an amenable number.

63993277872 is an abundant number, since it is smaller than the sum of its proper divisors (116239799568).

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

63993277872 is a wasteful number, since it uses less digits than its factorization.

63993277872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830730 (or 2830721 counting only the distinct ones).

The product of its digits is 48009024, while the sum is 63.

The spelling of 63993277872 in words is "sixty-three billion, nine hundred ninety-three million, two hundred seventy-seven thousand, eight hundred seventy-two".