1287173479363 has 2 divisors, whose sum is σ = 1287173479364. Its totient is φ = 1287173479362.

The previous prime is 1287173479313. The next prime is 1287173479399. The reversal of 1287173479363 is 3639743717821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1287173479363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1287173479313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643586739681 + 643586739682.

It is an arithmetic number, because the mean of its divisors is an integer number (643586739682).

Almost surely, 2^{1287173479363} is an apocalyptic number.

1287173479363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287173479363 is an equidigital number, since it uses as much as digits as its factorization.

1287173479363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32006016, while the sum is 61.

The spelling of 1287173479363 in words is "one trillion, two hundred eighty-seven billion, one hundred seventy-three million, four hundred seventy-nine thousand, three hundred sixty-three".