2742945380173 has 2 divisors, whose sum is σ = 2742945380174. Its totient is φ = 2742945380172.

The previous prime is 2742945380107. The next prime is 2742945380261. The reversal of 2742945380173 is 3710835492472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2510633912004 + 232311468169 = 1584498^2 + 481987^2 .

It is a cyclic number.

It is not a de Polignac number, because 2742945380173 - 2²⁵ = 2742911825741 is a prime.

It is a super-2 number, since 2×2742945380173² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2742945380473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1371472690086 + 1371472690087.

It is an arithmetic number, because the mean of its divisors is an integer number (1371472690087).

Almost surely, 2^{2742945380173} is an apocalyptic number.

It is an amenable number.

2742945380173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2742945380173 is an equidigital number, since it uses as much as digits as its factorization.

2742945380173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 2742945380173 in words is "two trillion, seven hundred forty-two billion, nine hundred forty-five million, three hundred eighty thousand, one hundred seventy-three".