422781816862 has 4 divisors (see below), whose sum is σ = 634172725296. Its totient is φ = 211390908430.

The previous prime is 422781816859. The next prime is 422781816869. The reversal of 422781816862 is 268618187224.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422781816869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105695454214 + ... + 105695454217.

It is an arithmetic number, because the mean of its divisors is an integer number (158543181324).

Almost surely, 2^422781816862 is an apocalyptic number.

422781816862 is a deficient number, since it is larger than the sum of its proper divisors (211390908434).

422781816862 is a wasteful number, since it uses less digits than its factorization.

422781816862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211390908433.

The product of its digits is 4128768, while the sum is 55.

The spelling of 422781816862 in words is "four hundred twenty-two billion, seven hundred eighty-one million, eight hundred sixteen thousand, eight hundred sixty-two".