361908666541 has 2 divisors, whose sum is σ = 361908666542.
Its totient is φ = 361908666540.
The previous prime is 361908666523. The next prime is 361908666589. The reversal of 361908666541 is 145666809163.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 336114700516 + 25793966025 = 579754^2 + 160605^2
It is a cyclic number.
It is not a de Polignac number, because 361908666541 - 235 = 327548928173 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (361908666641) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180954333270 + 180954333271.
It is an arithmetic number, because the mean of its divisors is an integer number (180954333271).
Almost surely, 2361908666541 is an apocalyptic number.
It is an amenable number.
361908666541 is a deficient number, since it is larger than the sum of its proper divisors (1).
361908666541 is an equidigital number, since it uses as much as digits as its factorization.
361908666541 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 5598720, while the sum is 55.
The spelling of 361908666541 in words is "three hundred sixty-one billion, nine hundred eight million, six hundred sixty-six thousand, five hundred forty-one".