21768708296 has 16 divisors (see below), whose sum is σ = 40870688640. Its totient is φ = 10869858000.

The previous prime is 21768708287. The next prime is 21768708319. The reversal of 21768708296 is 69280786712.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805636 + ... + 1817651.

It is an arithmetic number, because the mean of its divisors is an integer number (2554418040).

Almost surely, 2^21768708296 is an apocalyptic number.

It is an amenable number.

21768708296 is a deficient number, since it is larger than the sum of its proper divisors (19101980344).

21768708296 is a wasteful number, since it uses less digits than its factorization.

21768708296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624044 (or 3624040 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 21768708296 in words is "twenty-one billion, seven hundred sixty-eight million, seven hundred eight thousand, two hundred ninety-six".