1203766778411 has 2 divisors, whose sum is σ = 1203766778412. Its totient is φ = 1203766778410.

The previous prime is 1203766778377. The next prime is 1203766778443. The reversal of 1203766778411 is 1148776673021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1203766778411 - 2²⁶ = 1203699669547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1203766778491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601883389205 + 601883389206.

It is an arithmetic number, because the mean of its divisors is an integer number (601883389206).

Almost surely, 2^{1203766778411} is an apocalyptic number.

1203766778411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203766778411 is an equidigital number, since it uses as much as digits as its factorization.

1203766778411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 1203766778411 in words is "one trillion, two hundred three billion, seven hundred sixty-six million, seven hundred seventy-eight thousand, four hundred eleven".