21094082636 has 24 divisors (see below), whose sum is σ = 40311822096. Its totient is φ = 9578385920.

The previous prime is 21094082609. The next prime is 21094082641. The reversal of 21094082636 is 63628049012.

It is a junction number, because it is equal to n+sod(n) for n = 21094082593 and 21094082602.

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, 202361 + ... + 288336.

It is an arithmetic number, because the mean of its divisors is an integer number (1679659254).

Almost surely, 2^21094082636 is an apocalyptic number.

It is an amenable number.

21094082636 is a deficient number, since it is larger than the sum of its proper divisors (19217739460).

21094082636 is a wasteful number, since it uses less digits than its factorization.

21094082636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491689 (or 491687 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 21094082636 in words is "twenty-one billion, ninety-four million, eighty-two thousand, six hundred thirty-six".