361666112630321 has 2 divisors, whose sum is σ = 361666112630322. Its totient is φ = 361666112630320.

The previous prime is 361666112630311. The next prime is 361666112630353. The reversal of 361666112630321 is 123036211666163.

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., 356171256250000 + 5494856380321 = 18872500^2 + 2344111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361666112630321 is a prime.

It is a super-2 number, since 2×361666112630321² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (361666112630311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180833056315160 + 180833056315161.

It is an arithmetic number, because the mean of its divisors is an integer number (180833056315161).

Almost surely, 2^{361666112630321} is an apocalyptic number.

It is an amenable number.

361666112630321 is a deficient number, since it is larger than the sum of its proper divisors (1).

361666112630321 is an equidigital number, since it uses as much as digits as its factorization.

361666112630321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 361666112630321 in words is "three hundred sixty-one trillion, six hundred sixty-six billion, one hundred twelve million, six hundred thirty thousand, three hundred twenty-one".