20202144323311 has 16 divisors (see below), whose sum is σ = 21451146534144. Its totient is φ = 18959940895104.

The previous prime is 20202144323201. The next prime is 20202144323327. The reversal of 20202144323311 is 11332344120202.

It is a cyclic number.

It is not a de Polignac number, because 20202144323311 - 2¹⁷ = 20202144192239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20202144323311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202144323371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9670996 + ... + 11572918.

It is an arithmetic number, because the mean of its divisors is an integer number (1340696658384).

Almost surely, 2^{20202144323311} is an apocalyptic number.

20202144323311 is a deficient number, since it is larger than the sum of its proper divisors (1249002210833).

20202144323311 is a wasteful number, since it uses less digits than its factorization.

20202144323311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903710.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20202144323311 its reverse (11332344120202), we get a palindrome (31534488443513).

The spelling of 20202144323311 in words is "twenty trillion, two hundred two billion, one hundred forty-four million, three hundred twenty-three thousand, three hundred eleven".