20400244202 has 16 divisors (see below), whose sum is σ = 32957578752. Its totient is φ = 9414543600.

The previous prime is 20400244201. The next prime is 20400244211. The reversal of 20400244202 is 20244200402.

It is a super-3 number, since 3×20400244202³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20400244201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266363 + ... + 334289.

It is an arithmetic number, because the mean of its divisors is an integer number (2059848672).

Almost surely, 2^20400244202 is an apocalyptic number.

20400244202 is a deficient number, since it is larger than the sum of its proper divisors (12557334550).

20400244202 is a wasteful number, since it uses less digits than its factorization.

20400244202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79493.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20400244202 its reverse (20244200402), we get a palindrome (40644444604).

The spelling of 20400244202 in words is "twenty billion, four hundred million, two hundred forty-four thousand, two hundred two".