1200206827957 has 2 divisors, whose sum is σ = 1200206827958. Its totient is φ = 1200206827956.

The previous prime is 1200206827951. The next prime is 1200206827987. The reversal of 1200206827957 is 7597286020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198486320516 + 1720507441 = 1094754^2 + 41479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200206827957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200206827957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200206827951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600103413978 + 600103413979.

It is an arithmetic number, because the mean of its divisors is an integer number (600103413979).

Almost surely, 2^{1200206827957} is an apocalyptic number.

It is an amenable number.

1200206827957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200206827957 is an equidigital number, since it uses as much as digits as its factorization.

1200206827957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 1200206827957 in words is "one trillion, two hundred billion, two hundred six million, eight hundred twenty-seven thousand, nine hundred fifty-seven".