422127959778 has 162 divisors, whose sum is σ = 1078576705323. Its totient is φ = 118970626320.

The previous prime is 422127959761. The next prime is 422127959801. The reversal of 422127959778 is 877959721224.

422127959778 is a `hidden beast` number, since 4 + 22 + 12 + 7 + 9 + 597 + 7 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 211063979889 + 211063979889 = 459417^2 + 459417^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=459417.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 2527712251 + ... + 2527712417.

Almost surely, 2^422127959778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422127959778

422127959778 is an abundant number, since it is smaller than the sum of its proper divisors (656448745545).

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

422127959778 is a wasteful number, since it uses less digits than its factorization.

422127959778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 310 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 422127959778 in words is "four hundred twenty-two billion, one hundred twenty-seven million, nine hundred fifty-nine thousand, seven hundred seventy-eight".