405134908361 has 2 divisors, whose sum is σ = 405134908362. Its totient is φ = 405134908360.

The previous prime is 405134908331. The next prime is 405134908363. The reversal of 405134908361 is 163809431504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290352856336 + 114782052025 = 538844^2 + 338795^2 .

It is a cyclic number.

It is not a de Polignac number, because 405134908361 - 2¹⁰ = 405134907337 is a prime.

Together with 405134908363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (405134908363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202567454180 + 202567454181.

It is an arithmetic number, because the mean of its divisors is an integer number (202567454181).

Almost surely, 2^405134908361 is an apocalyptic number.

It is an amenable number.

405134908361 is a deficient number, since it is larger than the sum of its proper divisors (1).

405134908361 is an equidigital number, since it uses as much as digits as its factorization.

405134908361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 405134908361 in words is "four hundred five billion, one hundred thirty-four million, nine hundred eight thousand, three hundred sixty-one".