366551061691 has 2 divisors, whose sum is σ = 366551061692. Its totient is φ = 366551061690.

The previous prime is 366551061689. The next prime is 366551061713. The reversal of 366551061691 is 196160155663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 366551061691 - 2¹ = 366551061689 is a prime.

Together with 366551061689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (366551061631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183275530845 + 183275530846.

It is an arithmetic number, because the mean of its divisors is an integer number (183275530846).

Almost surely, 2^366551061691 is an apocalyptic number.

366551061691 is a deficient number, since it is larger than the sum of its proper divisors (1).

366551061691 is an equidigital number, since it uses as much as digits as its factorization.

366551061691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 366551061691 in words is "three hundred sixty-six billion, five hundred fifty-one million, sixty-one thousand, six hundred ninety-one".