20345154555119 has 2 divisors, whose sum is σ = 20345154555120. Its totient is φ = 20345154555118.

The previous prime is 20345154555083. The next prime is 20345154555133. The reversal of 20345154555119 is 91155545154302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20345154555119 - 2⁸ = 20345154554863 is a prime.

It is a super-2 number, since 2×20345154555119² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20345154554119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172577277559 + 10172577277560.

It is an arithmetic number, because the mean of its divisors is an integer number (10172577277560).

Almost surely, 2^{20345154555119} is an apocalyptic number.

20345154555119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20345154555119 is an equidigital number, since it uses as much as digits as its factorization.

20345154555119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700000, while the sum is 50.

The spelling of 20345154555119 in words is "twenty trillion, three hundred forty-five billion, one hundred fifty-four million, five hundred fifty-five thousand, one hundred nineteen".