21958696382 has 16 divisors (see below), whose sum is σ = 38444405760. Its totient is φ = 9210638328.

The previous prime is 21958696373. The next prime is 21958696393. The reversal of 21958696382 is 28369685912.

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, 16685282 + ... + 16686597.

It is an arithmetic number, because the mean of its divisors is an integer number (2402775360).

Almost surely, 2^21958696382 is an apocalyptic number.

21958696382 is a deficient number, since it is larger than the sum of its proper divisors (16485709378).

21958696382 is a wasteful number, since it uses less digits than its factorization.

21958696382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33371935.

The product of its digits is 11197440, while the sum is 59.

The spelling of 21958696382 in words is "twenty-one billion, nine hundred fifty-eight million, six hundred ninety-six thousand, three hundred eighty-two".