366506354281 has 2 divisors, whose sum is σ = 366506354282. Its totient is φ = 366506354280.

The previous prime is 366506354209. The next prime is 366506354303. The reversal of 366506354281 is 182453605663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 364947683881 + 1558670400 = 604109^2 + 39480^2 .

It is a cyclic number.

It is not a de Polignac number, because 366506354281 - 2¹⁵ = 366506321513 is a prime.

It is a super-2 number, since 2×366506354281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (366506354881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183253177140 + 183253177141.

It is an arithmetic number, because the mean of its divisors is an integer number (183253177141).

Almost surely, 2^366506354281 is an apocalyptic number.

It is an amenable number.

366506354281 is a deficient number, since it is larger than the sum of its proper divisors (1).

366506354281 is an equidigital number, since it uses as much as digits as its factorization.

366506354281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 366506354281 in words is "three hundred sixty-six billion, five hundred six million, three hundred fifty-four thousand, two hundred eighty-one".