21946267846 has 16 divisors (see below), whose sum is σ = 33692711184. Its totient is φ = 10715481504.

The previous prime is 21946267829. The next prime is 21946267859. The reversal of 21946267846 is 64876264912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380080 + ... + 433996.

It is an arithmetic number, because the mean of its divisors is an integer number (2105794449).

Almost surely, 2^21946267846 is an apocalyptic number.

21946267846 is a deficient number, since it is larger than the sum of its proper divisors (11746443338).

21946267846 is a wasteful number, since it uses less digits than its factorization.

21946267846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58695.

The product of its digits is 6967296, while the sum is 55.

The spelling of 21946267846 in words is "twenty-one billion, nine hundred forty-six million, two hundred sixty-seven thousand, eight hundred forty-six".