22013905946 has 4 divisors (see below), whose sum is σ = 33020858922. Its totient is φ = 11006952972.

The previous prime is 22013905937. The next prime is 22013905967. The reversal of 22013905946 is 64950931022.

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., 19477272721 + 2536633225 = 139561^2 + 50365^2 .

It is a super-2 number, since 2×22013905946² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5503476485 + ... + 5503476488.

Almost surely, 2^22013905946 is an apocalyptic number.

22013905946 is a deficient number, since it is larger than the sum of its proper divisors (11006952976).

22013905946 is a wasteful number, since it uses less digits than its factorization.

22013905946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11006952975.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 22013905946 in words is "twenty-two billion, thirteen million, nine hundred five thousand, nine hundred forty-six".