63720842706 has 96 divisors (see below), whose sum is σ = 148104298368. Its totient is φ = 19748171520.

The previous prime is 63720842701. The next prime is 63720842707. The reversal of 63720842706 is 60724802736.

63720842706 is a `hidden beast` number, since 6 + 372 + 0 + 8 + 4 + 270 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (63720842701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27739750 + ... + 27742046.

It is an arithmetic number, because the mean of its divisors is an integer number (1542753108).

Almost surely, 2^63720842706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63720842706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74052149184).

63720842706 is an abundant number, since it is smaller than the sum of its proper divisors (84383455662).

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

63720842706 is a wasteful number, since it uses less digits than its factorization.

63720842706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176 (or 4173 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 63720842706 in words is "sixty-three billion, seven hundred twenty million, eight hundred forty-two thousand, seven hundred six".