422138612788 has 6 divisors (see below), whose sum is σ = 738742572386. Its totient is φ = 211069306392.

The previous prime is 422138612729. The next prime is 422138612803. The reversal of 422138612788 is 887216831224.

It can be written as a sum of positive squares in only one way, i.e., 415421499024 + 6717113764 = 644532^2 + 81958^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52767326595 + ... + 52767326602.

Almost surely, 2^422138612788 is an apocalyptic number.

It is an amenable number.

422138612788 is a deficient number, since it is larger than the sum of its proper divisors (316603959598).

422138612788 is a wasteful number, since it uses less digits than its factorization.

422138612788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105534653201 (or 105534653199 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 52.

The spelling of 422138612788 in words is "four hundred twenty-two billion, one hundred thirty-eight million, six hundred twelve thousand, seven hundred eighty-eight".