361427385409 has 2 divisors, whose sum is σ = 361427385410. Its totient is φ = 361427385408.

The previous prime is 361427385401. The next prime is 361427385433. The reversal of 361427385409 is 904583724163.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360162018225 + 1265367184 = 600135^2 + 35572^2 .

It is a cyclic number.

It is not a de Polignac number, because 361427385409 - 2³ = 361427385401 is a prime.

It is not a weakly prime, because it can be changed into another prime (361427385401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180713692704 + 180713692705.

It is an arithmetic number, because the mean of its divisors is an integer number (180713692705).

It is a 1-persistent number, because it is pandigital, but 2⋅361427385409 = 722854770818 is not.

Almost surely, 2^361427385409 is an apocalyptic number.

It is an amenable number.

361427385409 is a deficient number, since it is larger than the sum of its proper divisors (1).

361427385409 is an equidigital number, since it uses as much as digits as its factorization.

361427385409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 361427385409 in words is "three hundred sixty-one billion, four hundred twenty-seven million, three hundred eighty-five thousand, four hundred nine".