20319620268 has 12 divisors (see below), whose sum is σ = 47412447320. Its totient is φ = 6773206752.

The previous prime is 20319620249. The next prime is 20319620297. The reversal of 20319620268 is 86202691302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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 in 3 ways as a sum of consecutive naturals, for example, 846650833 + ... + 846650856.

Almost surely, 2^20319620268 is an apocalyptic number.

It is an amenable number.

20319620268 is an abundant number, since it is smaller than the sum of its proper divisors (27092827052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20319620268 is a wasteful number, since it uses less digits than its factorization.

20319620268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693301696 (or 1693301694 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 20319620268 in words is "twenty billion, three hundred nineteen million, six hundred twenty thousand, two hundred sixty-eight".