21946158334 has 16 divisors (see below), whose sum is σ = 33430928400. Its totient is φ = 10802715264.

The previous prime is 21946158329. The next prime is 21946158341. The reversal of 21946158334 is 43385164912.

It is a happy number.

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, 174582 + ... + 272710.

It is an arithmetic number, because the mean of its divisors is an integer number (2089433025).

Almost surely, 2^21946158334 is an apocalyptic number.

21946158334 is a deficient number, since it is larger than the sum of its proper divisors (11484770066).

21946158334 is a wasteful number, since it uses less digits than its factorization.

21946158334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99867.

The product of its digits is 622080, while the sum is 46.

The spelling of 21946158334 in words is "twenty-one billion, nine hundred forty-six million, one hundred fifty-eight thousand, three hundred thirty-four".