20308863726128 has 10 divisors (see below), whose sum is σ = 39348423469404. Its totient is φ = 10154431863056.

The previous prime is 20308863726119. The next prime is 20308863726169. The reversal of 20308863726128 is 82162736880302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634651991426 + ... + 634651991457.

Almost surely, 2^{20308863726128} is an apocalyptic number.

It is an amenable number.

20308863726128 is a deficient number, since it is larger than the sum of its proper divisors (19039559743276).

20308863726128 is a wasteful number, since it uses less digits than its factorization.

20308863726128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269303982891 (or 1269303982885 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 20308863726128 in words is "twenty trillion, three hundred eight billion, eight hundred sixty-three million, seven hundred twenty-six thousand, one hundred twenty-eight".