20051142211337 has 4 divisors (see below), whose sum is σ = 20540194460436. Its totient is φ = 19562089962240.

The previous prime is 20051142211307. The next prime is 20051142211379. The reversal of 20051142211337 is 73311224115002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7824573995536 + 12226568215801 = 2797244^2 + 3496651^2 .

It is a cyclic number.

It is not a de Polignac number, because 20051142211337 - 2⁶ = 20051142211273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20051142211307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244526124488 + ... + 244526124569.

It is an arithmetic number, because the mean of its divisors is an integer number (5135048615109).

Almost surely, 2^{20051142211337} is an apocalyptic number.

It is an amenable number.

20051142211337 is a deficient number, since it is larger than the sum of its proper divisors (489052249099).

20051142211337 is an equidigital number, since it uses as much as digits as its factorization.

20051142211337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489052249098.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 20051142211337 its reverse (73311224115002), we get a palindrome (93362366326339).

The spelling of 20051142211337 in words is "twenty trillion, fifty-one billion, one hundred forty-two million, two hundred eleven thousand, three hundred thirty-seven".