20934055783871 has 2 divisors, whose sum is σ = 20934055783872. Its totient is φ = 20934055783870.

The previous prime is 20934055783841. The next prime is 20934055783877. The reversal of 20934055783871 is 17838755043902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20934055783871 - 2²² = 20934051589567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20934055783877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10467027891935 + 10467027891936.

It is an arithmetic number, because the mean of its divisors is an integer number (10467027891936).

Almost surely, 2^{20934055783871} is an apocalyptic number.

20934055783871 is a deficient number, since it is larger than the sum of its proper divisors (1).

20934055783871 is an equidigital number, since it uses as much as digits as its factorization.

20934055783871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50803200, while the sum is 62.

The spelling of 20934055783871 in words is "twenty trillion, nine hundred thirty-four billion, fifty-five million, seven hundred eighty-three thousand, eight hundred seventy-one".