20400244660202 has 16 divisors (see below), whose sum is σ = 33540428109024. Its totient is φ = 9228891378000.

The previous prime is 20400244660199. The next prime is 20400244660223. The reversal of 20400244660202 is 20206644200402.

It is a super-2 number, since 2×20400244660202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2197350449 + ... + 2197359732.

It is an arithmetic number, because the mean of its divisors is an integer number (2096276756814).

Almost surely, 2^{20400244660202} is an apocalyptic number.

20400244660202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20400244660202 is a deficient number, since it is larger than the sum of its proper divisors (13140183448822).

20400244660202 is a wasteful number, since it uses less digits than its factorization.

20400244660202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4394710405.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 20400244660202 its reverse (20206644200402), we get a palindrome (40606888860604).

The spelling of 20400244660202 in words is "twenty trillion, four hundred billion, two hundred forty-four million, six hundred sixty thousand, two hundred two".