1361775447291 has 12 divisors (see below), whose sum is σ = 2112141510312. Its totient is φ = 778157398368.

The previous prime is 1361775447283. The next prime is 1361775447299. The reversal of 1361775447291 is 1927445771631.

It is an interprime number because it is at equal distance from previous prime (1361775447283) and next prime (1361775447299).

It is not a de Polignac number, because 1361775447291 - 2³ = 1361775447283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1361775447299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4631889130 + ... + 4631889423.

It is an arithmetic number, because the mean of its divisors is an integer number (176011792526).

Almost surely, 2^{1361775447291} is an apocalyptic number.

1361775447291 is a deficient number, since it is larger than the sum of its proper divisors (750366063021).

1361775447291 is an equidigital number, since it uses as much as digits as its factorization.

1361775447291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9263778570 (or 9263778563 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 57.

The spelling of 1361775447291 in words is "one trillion, three hundred sixty-one billion, seven hundred seventy-five million, four hundred forty-seven thousand, two hundred ninety-one".