1200647077349 has 2 divisors, whose sum is σ = 1200647077350. Its totient is φ = 1200647077348.

The previous prime is 1200647077261. The next prime is 1200647077351. The reversal of 1200647077349 is 9437707460021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1012458564100 + 188188513249 = 1006210^2 + 433807^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200647077349 - 2¹² = 1200647073253 is a prime.

Together with 1200647077351, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200647077297 and 1200647077306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200647077649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600323538674 + 600323538675.

It is an arithmetic number, because the mean of its divisors is an integer number (600323538675).

Almost surely, 2^{1200647077349} is an apocalyptic number.

It is an amenable number.

1200647077349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200647077349 is an equidigital number, since it uses as much as digits as its factorization.

1200647077349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 1200647077349 in words is "one trillion, two hundred billion, six hundred forty-seven million, seventy-seven thousand, three hundred forty-nine".