422661621856 has 12 divisors (see below), whose sum is σ = 832115068092. Its totient is φ = 211330810912.

The previous prime is 422661621829. The next prime is 422661621883. The reversal of 422661621856 is 658126166224.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (422661621829) and next prime (422661621883).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6604087810 + ... + 6604087873.

It is an arithmetic number, because the mean of its divisors is an integer number (69342922341).

Almost surely, 2^422661621856 is an apocalyptic number.

It is an amenable number.

422661621856 is a deficient number, since it is larger than the sum of its proper divisors (409453446236).

422661621856 is a wasteful number, since it uses less digits than its factorization.

422661621856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13208175693 (or 13208175685 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The spelling of 422661621856 in words is "four hundred twenty-two billion, six hundred sixty-one million, six hundred twenty-one thousand, eight hundred fifty-six".