20354334061679 has 2 divisors, whose sum is σ = 20354334061680. Its totient is φ = 20354334061678.

The previous prime is 20354334061673. The next prime is 20354334061681. The reversal of 20354334061679 is 97616043345302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20354334061679 - 2³⁶ = 20285614584943 is a prime.

Together with 20354334061681, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20354334061679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20354334061673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177167030839 + 10177167030840.

It is an arithmetic number, because the mean of its divisors is an integer number (10177167030840).

Almost surely, 2^{20354334061679} is an apocalyptic number.

20354334061679 is a deficient number, since it is larger than the sum of its proper divisors (1).

20354334061679 is an equidigital number, since it uses as much as digits as its factorization.

20354334061679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 53.

The spelling of 20354334061679 in words is "twenty trillion, three hundred fifty-four billion, three hundred thirty-four million, sixty-one thousand, six hundred seventy-nine".