20355263314165 has 32 divisors (see below), whose sum is σ = 27858796632576. Its totient is φ = 14144237184000.

The previous prime is 20355263314129. The next prime is 20355263314193. The reversal of 20355263314165 is 56141336255302.

It is a de Polignac number, because none of the positive numbers 2^k-20355263314165 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2961540 + ... + 7034290.

It is an arithmetic number, because the mean of its divisors is an integer number (870587394768).

Almost surely, 2^{20355263314165} is an apocalyptic number.

It is an amenable number.

20355263314165 is a deficient number, since it is larger than the sum of its proper divisors (7503533318411).

20355263314165 is a wasteful number, since it uses less digits than its factorization.

20355263314165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077309.

The product of its (nonzero) digits is 1944000, while the sum is 46.

Adding to 20355263314165 its reverse (56141336255302), we get a palindrome (76496599569467).

The spelling of 20355263314165 in words is "twenty trillion, three hundred fifty-five billion, two hundred sixty-three million, three hundred fourteen thousand, one hundred sixty-five".