2139218177741 has 2 divisors, whose sum is σ = 2139218177742. Its totient is φ = 2139218177740.

The previous prime is 2139218177717. The next prime is 2139218177743. The reversal of 2139218177741 is 1477718129312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1672495562500 + 466722615241 = 1293250^2 + 683171^2 .

It is a cyclic number.

It is not a de Polignac number, because 2139218177741 - 2¹⁰ = 2139218176717 is a prime.

Together with 2139218177743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2139218177743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069609088870 + 1069609088871.

It is an arithmetic number, because the mean of its divisors is an integer number (1069609088871).

Almost surely, 2^{2139218177741} is an apocalyptic number.

It is an amenable number.

2139218177741 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139218177741 is an equidigital number, since it uses as much as digits as its factorization.

2139218177741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 53.

The spelling of 2139218177741 in words is "two trillion, one hundred thirty-nine billion, two hundred eighteen million, one hundred seventy-seven thousand, seven hundred forty-one".