1200265623617 has 2 divisors, whose sum is σ = 1200265623618. Its totient is φ = 1200265623616.

The previous prime is 1200265623541. The next prime is 1200265623643. The reversal of 1200265623617 is 7163265620021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1199384186896 + 881436721 = 1095164^2 + 29689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200265623617 - 2²⁸ = 1199997188161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200265623647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600132811808 + 600132811809.

It is an arithmetic number, because the mean of its divisors is an integer number (600132811809).

Almost surely, 2^{1200265623617} is an apocalyptic number.

It is an amenable number.

1200265623617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200265623617 is an equidigital number, since it uses as much as digits as its factorization.

1200265623617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 1200265623617 in words is "one trillion, two hundred billion, two hundred sixty-five million, six hundred twenty-three thousand, six hundred seventeen".