63723940608 has 54 divisors (see below), whose sum is σ = 169617233604. Its totient is φ = 21238981632.

The previous prime is 63723940591. The next prime is 63723940613. The reversal of 63723940608 is 80604932736.

It is a super-2 number, since 2×63723940608² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 5 ways as a sum of consecutive naturals, for example, 6991158 + ... + 7000266.

Almost surely, 2^63723940608 is an apocalyptic number.

It is an amenable number.

63723940608 is an abundant number, since it is smaller than the sum of its proper divisors (105893292996).

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

63723940608 is an frugal number, since it uses more digits than its factorization.

63723940608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18237 (or 9114 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

Multiplying 63723940608 by its sum of digits (48), we get a square (3058749149184 = 1748928²).

63723940608 divided by its sum of digits (48) gives a square (1327582096 = 36436²).

The spelling of 63723940608 in words is "sixty-three billion, seven hundred twenty-three million, nine hundred forty thousand, six hundred eight".