1201605208477 has 2 divisors, whose sum is σ = 1201605208478. Its totient is φ = 1201605208476.

The previous prime is 1201605208451. The next prime is 1201605208481. The reversal of 1201605208477 is 7748025061021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1001412498436 + 200192710041 = 1000706^2 + 447429^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201605208477 - 2¹¹ = 1201605206429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201605208777) 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, 600802604238 + 600802604239.

It is an arithmetic number, because the mean of its divisors is an integer number (600802604239).

Almost surely, 2^{1201605208477} is an apocalyptic number.

It is an amenable number.

1201605208477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201605208477 is an equidigital number, since it uses as much as digits as its factorization.

1201605208477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 1201605208477 in words is "one trillion, two hundred one billion, six hundred five million, two hundred eight thousand, four hundred seventy-seven".