20354311502361 has 6 divisors (see below), whose sum is σ = 29400672170090. Its totient is φ = 13569541001568.

The previous prime is 20354311502353. The next prime is 20354311502381. The reversal of 20354311502361 is 16320511345302.

20354311502361 is a `hidden beast` number, since 2 + 0 + 3 + 543 + 1 + 1 + 50 + 2 + 3 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10285233843600 + 10069077658761 = 3207060^2 + 3173181^2 .

It is not a de Polignac number, because 20354311502361 - 2³ = 20354311502353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20354311502341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1130795083456 + ... + 1130795083473.

Almost surely, 2^{20354311502361} is an apocalyptic number.

It is an amenable number.

20354311502361 is a deficient number, since it is larger than the sum of its proper divisors (9046360667729).

20354311502361 is a wasteful number, since it uses less digits than its factorization.

20354311502361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261590166935 (or 2261590166932 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 20354311502361 its reverse (16320511345302), we get a palindrome (36674822847663).

The spelling of 20354311502361 in words is "twenty trillion, three hundred fifty-four billion, three hundred eleven million, five hundred two thousand, three hundred sixty-one".