1200265623541 has 2 divisors, whose sum is σ = 1200265623542. Its totient is φ = 1200265623540.

The previous prime is 1200265623527. The next prime is 1200265623617. The reversal of 1200265623541 is 1453265620021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081329616900 + 118936006641 = 1039870^2 + 344871^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200265623541 - 2¹¹ = 1200265621493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200265623541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200265623521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600132811770 + 600132811771.

It is an arithmetic number, because the mean of its divisors is an integer number (600132811771).

Almost surely, 2^{1200265623541} is an apocalyptic number.

It is an amenable number.

1200265623541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200265623541 is an equidigital number, since it uses as much as digits as its factorization.

1200265623541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 1200265623541 in words is "one trillion, two hundred billion, two hundred sixty-five million, six hundred twenty-three thousand, five hundred forty-one".