21859767606982 has 8 divisors (see below), whose sum is σ = 34515422537400. Its totient is φ = 10354626761184.

The previous prime is 21859767606947. The next prime is 21859767607081. The reversal of 21859767606982 is 28960676795812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21859767606899 and 21859767606908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287628521107 + ... + 287628521182.

It is an arithmetic number, because the mean of its divisors is an integer number (4314427817175).

Almost surely, 2^{21859767606982} is an apocalyptic number.

21859767606982 is a deficient number, since it is larger than the sum of its proper divisors (12655654930418).

21859767606982 is a wasteful number, since it uses less digits than its factorization.

21859767606982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575257042310.

The product of its (nonzero) digits is 1097349120, while the sum is 76.

The spelling of 21859767606982 in words is "twenty-one trillion, eight hundred fifty-nine billion, seven hundred sixty-seven million, six hundred six thousand, nine hundred eighty-two".