549693507078137 has 2 divisors, whose sum is σ = 549693507078138. Its totient is φ = 549693507078136.

The previous prime is 549693507078077. The next prime is 549693507078169. The reversal of 549693507078137 is 731870705396945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470554317445696 + 79139189632441 = 21692264^2 + 8896021^2 .

It is a cyclic number.

It is not a de Polignac number, because 549693507078137 - 2²⁰ = 549693506029561 is a prime.

It is not a weakly prime, because it can be changed into another prime (549693507008137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274846753539068 + 274846753539069.

It is an arithmetic number, because the mean of its divisors is an integer number (274846753539069).

Almost surely, 2^{549693507078137} is an apocalyptic number.

It is an amenable number.

549693507078137 is a deficient number, since it is larger than the sum of its proper divisors (1).

549693507078137 is an equidigital number, since it uses as much as digits as its factorization.

549693507078137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200225600, while the sum is 74.

The spelling of 549693507078137 in words is "five hundred forty-nine trillion, six hundred ninety-three billion, five hundred seven million, seventy-eight thousand, one hundred thirty-seven".