20135154031441 has 2 divisors, whose sum is σ = 20135154031442. Its totient is φ = 20135154031440.

The previous prime is 20135154031439. The next prime is 20135154031519. The reversal of 20135154031441 is 14413045153102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15923132544400 + 4212021487041 = 3990380^2 + 2052321^2 .

It is a cyclic number.

It is not a de Polignac number, because 20135154031441 - 2¹ = 20135154031439 is a prime.

Together with 20135154031439, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20135154031397 and 20135154031406.

It is not a weakly prime, because it can be changed into another prime (20135154031411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067577015720 + 10067577015721.

It is an arithmetic number, because the mean of its divisors is an integer number (10067577015721).

Almost surely, 2^{20135154031441} is an apocalyptic number.

It is an amenable number.

20135154031441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20135154031441 is an equidigital number, since it uses as much as digits as its factorization.

20135154031441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 20135154031441 its reverse (14413045153102), we get a palindrome (34548199184543).

The spelling of 20135154031441 in words is "twenty trillion, one hundred thirty-five billion, one hundred fifty-four million, thirty-one thousand, four hundred forty-one".