20013855276671 has 2 divisors, whose sum is σ = 20013855276672. Its totient is φ = 20013855276670.

The previous prime is 20013855276641. The next prime is 20013855276697. The reversal of 20013855276671 is 17667255831002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20013855276671 - 2²² = 20013851082367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20013855276641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006927638335 + 10006927638336.

It is an arithmetic number, because the mean of its divisors is an integer number (10006927638336).

Almost surely, 2^{20013855276671} is an apocalyptic number.

20013855276671 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013855276671 is an equidigital number, since it uses as much as digits as its factorization.

20013855276671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 20013855276671 in words is "twenty trillion, thirteen billion, eight hundred fifty-five million, two hundred seventy-six thousand, six hundred seventy-one".