20012315200 has 42 divisors (see below), whose sum is σ = 49242807026. Its totient is φ = 8004925440.

The previous prime is 20012315177. The next prime is 20012315237. The reversal of 20012315200 is 251321002.

It can be written as a sum of positive squares in 3 ways, for example, as 1663987264 + 18348327936 = 40792^2 + 135456^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6252249 + ... + 6255448.

Almost surely, 2^20012315200 is an apocalyptic number.

20012315200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012315200 is an abundant number, since it is smaller than the sum of its proper divisors (29230491826).

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

20012315200 is a wasteful number, since it uses less digits than its factorization.

20012315200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507719 (or 12507704 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 20012315200 its reverse (251321002), we get a palindrome (20263636202).

The spelling of 20012315200 in words is "twenty billion, twelve million, three hundred fifteen thousand, two hundred".