63166722220 has 192 divisors, whose sum is σ = 159241420800. Its totient is φ = 21026767104.

The previous prime is 63166722187. The next prime is 63166722239. The reversal of 63166722220 is 2222766136.

63166722220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 63166722220.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58110517 + ... + 58111603.

It is an arithmetic number, because the mean of its divisors is an integer number (829382400).

Almost surely, 2^63166722220 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 63166722220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79620710400).

63166722220 is an abundant number, since it is smaller than the sum of its proper divisors (96074698580).

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

63166722220 is a wasteful number, since it uses less digits than its factorization.

63166722220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357 (or 1341 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 63166722220 in words is "sixty-three billion, one hundred sixty-six million, seven hundred twenty-two thousand, two hundred twenty".