21967793586 has 12 divisors (see below), whose sum is σ = 47596886142. Its totient is φ = 7322597856.

The previous prime is 21967793527. The next prime is 21967793629. The reversal of 21967793586 is 68539776912.

21967793586 is a `hidden beast` number, since 219 + 67 + 7 + 9 + 358 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12604328361 + 9363465225 = 112269^2 + 96765^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 610216471 + ... + 610216506.

Almost surely, 2^21967793586 is an apocalyptic number.

21967793586 is an abundant number, since it is smaller than the sum of its proper divisors (25629092556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21967793586 is a wasteful number, since it uses less digits than its factorization.

21967793586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220432985 (or 1220432982 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 21967793586 in words is "twenty-one billion, nine hundred sixty-seven million, seven hundred ninety-three thousand, five hundred eighty-six".