1338761027447 has 2 divisors, whose sum is σ = 1338761027448. Its totient is φ = 1338761027446.

The previous prime is 1338761027369. The next prime is 1338761027557. The reversal of 1338761027447 is 7447201678331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1338761027447 - 2²² = 1338756833143 is a prime.

It is a super-2 number, since 2×1338761027447² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338761021447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669380513723 + 669380513724.

It is an arithmetic number, because the mean of its divisors is an integer number (669380513724).

Almost surely, 2^{1338761027447} is an apocalyptic number.

1338761027447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338761027447 is an equidigital number, since it uses as much as digits as its factorization.

1338761027447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4741632, while the sum is 53.

The spelling of 1338761027447 in words is "one trillion, three hundred thirty-eight billion, seven hundred sixty-one million, twenty-seven thousand, four hundred forty-seven".