22666042442 has 4 divisors (see below), whose sum is σ = 33999063666. Its totient is φ = 11333021220.

The previous prime is 22666042397. The next prime is 22666042471. The reversal of 22666042442 is 24424066622.

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

It can be written as a sum of positive squares in only one way, i.e., 20646528721 + 2019513721 = 143689^2 + 44939^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22666042396 and 22666042405.

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, 5666510609 + ... + 5666510612.

Almost surely, 2^22666042442 is an apocalyptic number.

22666042442 is a deficient number, since it is larger than the sum of its proper divisors (11333021224).

22666042442 is a wasteful number, since it uses less digits than its factorization.

22666042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11333021223.

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 22666042442 in words is "twenty-two billion, six hundred sixty-six million, forty-two thousand, four hundred forty-two".