21799795796 has 6 divisors (see below), whose sum is σ = 38149642650. Its totient is φ = 10899897896.

The previous prime is 21799795781. The next prime is 21799795847. The reversal of 21799795796 is 69759799712.

It can be written as a sum of positive squares in only one way, i.e., 20868691600 + 931104196 = 144460^2 + 30514^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2724974471 + ... + 2724974478.

It is an arithmetic number, because the mean of its divisors is an integer number (6358273775).

Almost surely, 2^21799795796 is an apocalyptic number.

It is an amenable number.

21799795796 is a deficient number, since it is larger than the sum of its proper divisors (16349846854).

21799795796 is a wasteful number, since it uses less digits than its factorization.

21799795796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449948953 (or 5449948951 counting only the distinct ones).

The product of its digits is 135025380, while the sum is 71.

The spelling of 21799795796 in words is "twenty-one billion, seven hundred ninety-nine million, seven hundred ninety-five thousand, seven hundred ninety-six".