1200617646149 has 2 divisors, whose sum is σ = 1200617646150. Its totient is φ = 1200617646148.

The previous prime is 1200617646091. The next prime is 1200617646167. The reversal of 1200617646149 is 9416467160021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1184407773025 + 16209873124 = 1088305^2 + 127318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200617646149 - 2⁸ = 1200617645893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200617646199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600308823074 + 600308823075.

It is an arithmetic number, because the mean of its divisors is an integer number (600308823075).

Almost surely, 2^{1200617646149} is an apocalyptic number.

It is an amenable number.

1200617646149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200617646149 is an equidigital number, since it uses as much as digits as its factorization.

1200617646149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 1200617646149 in words is "one trillion, two hundred billion, six hundred seventeen million, six hundred forty-six thousand, one hundred forty-nine".