20000012320 has 24 divisors (see below), whose sum is σ = 47250029484. Its totient is φ = 8000004864.

The previous prime is 20000012309. The next prime is 20000012341. The reversal of 20000012320 is 2321000002.

It can be written as a sum of positive squares in 2 ways, for example, as 19020823056 + 979189264 = 137916^2 + 31292^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20000012297 and 20000012306.

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, 62499879 + ... + 62500198.

Almost surely, 2^20000012320 is an apocalyptic number.

20000012320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000012320 is an abundant number, since it is smaller than the sum of its proper divisors (27250017164).

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

20000012320 is a wasteful number, since it uses less digits than its factorization.

20000012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125000092 (or 125000084 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20000012320 its reverse (2321000002), we get a palindrome (22321012322).

The spelling of 20000012320 in words is "twenty billion, twelve thousand, three hundred twenty".