2177342621941 has 2 divisors, whose sum is σ = 2177342621942. Its totient is φ = 2177342621940.

The previous prime is 2177342621917. The next prime is 2177342621977. The reversal of 2177342621941 is 1491262437712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1592507706916 + 584834915025 = 1261946^2 + 764745^2 .

It is a cyclic number.

It is not a de Polignac number, because 2177342621941 - 2⁷ = 2177342621813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2177342621911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1088671310970 + 1088671310971.

It is an arithmetic number, because the mean of its divisors is an integer number (1088671310971).

Almost surely, 2^{2177342621941} is an apocalyptic number.

It is an amenable number.

2177342621941 is a deficient number, since it is larger than the sum of its proper divisors (1).

2177342621941 is an equidigital number, since it uses as much as digits as its factorization.

2177342621941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The spelling of 2177342621941 in words is "two trillion, one hundred seventy-seven billion, three hundred forty-two million, six hundred twenty-one thousand, nine hundred forty-one".