21677188996 has 24 divisors (see below), whose sum is σ = 39954088160. Its totient is φ = 10262376000.

The previous prime is 21677188979. The next prime is 21677188999. The reversal of 21677188996 is 69988177612.

It is not an unprimeable number, because it can be changed into a prime (21677188999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57691 + ... + 216061.

Almost surely, 2^21677188996 is an apocalyptic number.

It is an amenable number.

21677188996 is a deficient number, since it is larger than the sum of its proper divisors (18276899164).

21677188996 is a wasteful number, since it uses less digits than its factorization.

21677188996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160195 (or 160193 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 64.

The spelling of 21677188996 in words is "twenty-one billion, six hundred seventy-seven million, one hundred eighty-eight thousand, nine hundred ninety-six".