63618220708 has 96 divisors (see below), whose sum is σ = 139969363968. Its totient is φ = 24700896000.

The previous prime is 63618220681. The next prime is 63618220717. The reversal of 63618220708 is 80702281636.

63618220708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 904408 + ... + 972208.

It is an arithmetic number, because the mean of its divisors is an integer number (1458014208).

Almost surely, 2^63618220708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63618220708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69984681984).

63618220708 is an abundant number, since it is smaller than the sum of its proper divisors (76351143260).

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

63618220708 is a wasteful number, since it uses less digits than its factorization.

63618220708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67913 (or 67911 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 63618220708 in words is "sixty-three billion, six hundred eighteen million, two hundred twenty thousand, seven hundred eight".