422647440325721 has 16 divisors (see below), whose sum is σ = 455400130135104. Its totient is φ = 389929267272384.

The previous prime is 422647440325673. The next prime is 422647440325769. The reversal of 422647440325721 is 127523044746224.

It is an interprime number because it is at equal distance from previous prime (422647440325673) and next prime (422647440325769).

It is a cyclic number.

It is not a de Polignac number, because 422647440325721 - 2³⁰ = 422646366583897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422647440025721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264913226 + ... + 266503868.

It is an arithmetic number, because the mean of its divisors is an integer number (28462508133444).

Almost surely, 2^{422647440325721} is an apocalyptic number.

It is an amenable number.

422647440325721 is a deficient number, since it is larger than the sum of its proper divisors (32752689809383).

422647440325721 is a wasteful number, since it uses less digits than its factorization.

422647440325721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601480.

The product of its (nonzero) digits is 18063360, while the sum is 53.

The spelling of 422647440325721 in words is "four hundred twenty-two trillion, six hundred forty-seven billion, four hundred forty million, three hundred twenty-five thousand, seven hundred twenty-one".