20115040200 has 96 divisors (see below), whose sum is σ = 62378180160. Its totient is φ = 5362156800.

The previous prime is 20115040193. The next prime is 20115040229. The reversal of 20115040200 is 204051102.

It is a super-2 number, since 2×20115040200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20115040200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3345597 + ... + 3351603.

It is an arithmetic number, because the mean of its divisors is an integer number (649772710).

Almost surely, 2^20115040200 is an apocalyptic number.

20115040200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20115040200 is an abundant number, since it is smaller than the sum of its proper divisors (42263139960).

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

20115040200 is a wasteful number, since it uses less digits than its factorization.

20115040200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11607 (or 11598 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 20115040200 its reverse (204051102), we get a palindrome (20319091302).

The spelling of 20115040200 in words is "twenty billion, one hundred fifteen million, forty thousand, two hundred".