20319421468 has 12 divisors (see below), whose sum is σ = 35572259800. Its totient is φ = 10155918672.

The previous prime is 20319421429. The next prime is 20319421471. The reversal of 20319421468 is 86412491302.

It is a self number, because there is not a number n which added to its sum of digits gives 20319421468.

It is a congruent number.

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, 935943 + ... + 957406.

Almost surely, 2^20319421468 is an apocalyptic number.

It is an amenable number.

20319421468 is a deficient number, since it is larger than the sum of its proper divisors (15252838332).

20319421468 is a wasteful number, since it uses less digits than its factorization.

20319421468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896036 (or 1896034 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 20319421468 in words is "twenty billion, three hundred nineteen million, four hundred twenty-one thousand, four hundred sixty-eight".