5378578631761 has 2 divisors, whose sum is σ = 5378578631762. Its totient is φ = 5378578631760.

The previous prime is 5378578631753. The next prime is 5378578631861. The reversal of 5378578631761 is 1671368758735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2945150228736 + 2433428403025 = 1716144^2 + 1559945^2 .

It is a cyclic number.

It is not a de Polignac number, because 5378578631761 - 2³ = 5378578631753 is a prime.

It is a super-2 number, since 2×5378578631761² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5378578631731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2689289315880 + 2689289315881.

It is an arithmetic number, because the mean of its divisors is an integer number (2689289315881).

Almost surely, 2^{5378578631761} is an apocalyptic number.

It is an amenable number.

5378578631761 is a deficient number, since it is larger than the sum of its proper divisors (1).

5378578631761 is an equidigital number, since it uses as much as digits as its factorization.

5378578631761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 177811200, while the sum is 67.

The spelling of 5378578631761 in words is "five trillion, three hundred seventy-eight billion, five hundred seventy-eight million, six hundred thirty-one thousand, seven hundred sixty-one".