642622406022 has 12 divisors (see below), whose sum is σ = 1392348546420. Its totient is φ = 214207468668.

The previous prime is 642622406009. The next prime is 642622406093. The reversal of 642622406022 is 220604226246.

642622406022 is a `hidden beast` number, since 6 + 4 + 2 + 6 + 2 + 2 + 40 + 602 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17850622372 + ... + 17850622407.

It is an arithmetic number, because the mean of its divisors is an integer number (116029045535).

Almost surely, 2^642622406022 is an apocalyptic number.

642622406022 is an abundant number, since it is smaller than the sum of its proper divisors (749726140398).

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

642622406022 is a wasteful number, since it uses less digits than its factorization.

642622406022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35701244787 (or 35701244784 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 642622406022 in words is "six hundred forty-two billion, six hundred twenty-two million, four hundred six thousand, twenty-two".