21773596268 has 6 divisors (see below), whose sum is σ = 38103793476. Its totient is φ = 10886798132.

The previous prime is 21773596267. The next prime is 21773596279. The reversal of 21773596268 is 86269537712.

It is not an unprimeable number, because it can be changed into a prime (21773596267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2721699530 + ... + 2721699537.

It is an arithmetic number, because the mean of its divisors is an integer number (6350632246).

Almost surely, 2^21773596268 is an apocalyptic number.

It is an amenable number.

21773596268 is a deficient number, since it is larger than the sum of its proper divisors (16330197208).

21773596268 is a wasteful number, since it uses less digits than its factorization.

21773596268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443399071 (or 5443399069 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 56.

The spelling of 21773596268 in words is "twenty-one billion, seven hundred seventy-three million, five hundred ninety-six thousand, two hundred sixty-eight".