1361172638827 has 2 divisors, whose sum is σ = 1361172638828. Its totient is φ = 1361172638826.

The previous prime is 1361172638741. The next prime is 1361172638953. The reversal of 1361172638827 is 7288362711631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361172638827 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361172608827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680586319413 + 680586319414.

It is an arithmetic number, because the mean of its divisors is an integer number (680586319414).

Almost surely, 2^{1361172638827} is an apocalyptic number.

1361172638827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361172638827 is an equidigital number, since it uses as much as digits as its factorization.

1361172638827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 55.

The spelling of 1361172638827 in words is "one trillion, three hundred sixty-one billion, one hundred seventy-two million, six hundred thirty-eight thousand, eight hundred twenty-seven".