1287379105801 has 2 divisors, whose sum is σ = 1287379105802. Its totient is φ = 1287379105800.

The previous prime is 1287379105799. The next prime is 1287379105813. The reversal of 1287379105801 is 1085019737821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 875085411600 + 412293694201 = 935460^2 + 642101^2 .

It is a cyclic number.

It is not a de Polignac number, because 1287379105801 - 2¹ = 1287379105799 is a prime.

Together with 1287379105799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1287379105861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643689552900 + 643689552901.

It is an arithmetic number, because the mean of its divisors is an integer number (643689552901).

Almost surely, 2^{1287379105801} is an apocalyptic number.

It is an amenable number.

1287379105801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287379105801 is an equidigital number, since it uses as much as digits as its factorization.

1287379105801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 52.

The spelling of 1287379105801 in words is "one trillion, two hundred eighty-seven billion, three hundred seventy-nine million, one hundred five thousand, eight hundred one".