21176846692 has 6 divisors (see below), whose sum is σ = 37059481718. Its totient is φ = 10588423344.

The previous prime is 21176846689. The next prime is 21176846711. The reversal of 21176846692 is 29664867112.

It can be written as a sum of positive squares in only one way, i.e., 20950825536 + 226021156 = 144744^2 + 15034^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2647105833 + ... + 2647105840.

Almost surely, 2^21176846692 is an apocalyptic number.

It is an amenable number.

21176846692 is a deficient number, since it is larger than the sum of its proper divisors (15882635026).

21176846692 is a wasteful number, since it uses less digits than its factorization.

21176846692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5294211677 (or 5294211675 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The spelling of 21176846692 in words is "twenty-one billion, one hundred seventy-six million, eight hundred forty-six thousand, six hundred ninety-two".