422165053773721 has 8 divisors (see below), whose sum is σ = 422824777375688. Its totient is φ = 421505393760000.

The previous prime is 422165053773623. The next prime is 422165053773737. The reversal of 422165053773721 is 127377350561224.

It can be written as a sum of positive squares in 4 ways, for example, as 89065651251600 + 333099402522121 = 9437460^2 + 18251011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422165053773721 - 2²¹ = 422165051676569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422165053773751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2599920 + ... + 29173441.

It is an arithmetic number, because the mean of its divisors is an integer number (52853097171961).

Almost surely, 2^{422165053773721} is an apocalyptic number.

It is an amenable number.

422165053773721 is a deficient number, since it is larger than the sum of its proper divisors (659723601967).

422165053773721 is a wasteful number, since it uses less digits than its factorization.

422165053773721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31794123.

The product of its (nonzero) digits is 14817600, while the sum is 55.

The spelling of 422165053773721 in words is "four hundred twenty-two trillion, one hundred sixty-five billion, fifty-three million, seven hundred seventy-three thousand, seven hundred twenty-one".