20012323340 has 12 divisors (see below), whose sum is σ = 42025879056. Its totient is φ = 8004929328.

The previous prime is 20012323187. The next prime is 20012323399. The reversal of 20012323340 is 4332321002.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1000616167 = 20012323340 / (2 + 0 + 0 + 1 + 2 + 3 + 2 + 3 + 3 + 4 + 0).

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, 500308064 + ... + 500308103.

It is an arithmetic number, because the mean of its divisors is an integer number (3502156588).

Almost surely, 2^20012323340 is an apocalyptic number.

20012323340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012323340 is an abundant number, since it is smaller than the sum of its proper divisors (22013555716).

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

20012323340 is a wasteful number, since it uses less digits than its factorization.

20012323340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000616176 (or 1000616174 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20012323340 its reverse (4332321002), we get a palindrome (24344644342).

The spelling of 20012323340 in words is "twenty billion, twelve million, three hundred twenty-three thousand, three hundred forty".