20343655235311 has 2 divisors, whose sum is σ = 20343655235312. Its totient is φ = 20343655235310.

The previous prime is 20343655235291. The next prime is 20343655235353. The reversal of 20343655235311 is 11353255634302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20343655235311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20343655232311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10171827617655 + 10171827617656.

It is an arithmetic number, because the mean of its divisors is an integer number (10171827617656).

Almost surely, 2^{20343655235311} is an apocalyptic number.

20343655235311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20343655235311 is an equidigital number, since it uses as much as digits as its factorization.

20343655235311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 43.

The spelling of 20343655235311 in words is "twenty trillion, three hundred forty-three billion, six hundred fifty-five million, two hundred thirty-five thousand, three hundred eleven".