20307300512136 has 128 divisors (see below), whose sum is σ = 56700259200000. Its totient is φ = 6008826095360.

The previous prime is 20307300512089. The next prime is 20307300512179. The reversal of 20307300512136 is 63121500370302.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 20307300512097 and 20307300512106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2054196 + ... + 6695843.

It is an arithmetic number, because the mean of its divisors is an integer number (442970775000).

Almost surely, 2^{20307300512136} is an apocalyptic number.

It is an amenable number.

20307300512136 is an abundant number, since it is smaller than the sum of its proper divisors (36392958687864).

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

20307300512136 is a wasteful number, since it uses less digits than its factorization.

20307300512136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8750267 (or 8750263 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

Adding to 20307300512136 its reverse (63121500370302), we get a palindrome (83428800882438).

The spelling of 20307300512136 in words is "twenty trillion, three hundred seven billion, three hundred million, five hundred twelve thousand, one hundred thirty-six".