1316233666477 has 2 divisors, whose sum is σ = 1316233666478. Its totient is φ = 1316233666476.

The previous prime is 1316233666471. The next prime is 1316233666487. The reversal of 1316233666477 is 7746663326131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972578605636 + 343655060841 = 986194^2 + 586221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316233666477 - 2³⁵ = 1281873928109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316233666471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658116833238 + 658116833239.

It is an arithmetic number, because the mean of its divisors is an integer number (658116833239).

Almost surely, 2^{1316233666477} is an apocalyptic number.

It is an amenable number.

1316233666477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316233666477 is an equidigital number, since it uses as much as digits as its factorization.

1316233666477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 55.

The spelling of 1316233666477 in words is "one trillion, three hundred sixteen billion, two hundred thirty-three million, six hundred sixty-six thousand, four hundred seventy-seven".