3139645521469 has 2 divisors, whose sum is σ = 3139645521470. Its totient is φ = 3139645521468.

The previous prime is 3139645521421. The next prime is 3139645521503. The reversal of 3139645521469 is 9641255469313.

3139645521469 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3014355716100 + 125289805369 = 1736190^2 + 353963^2 .

It is a cyclic number.

It is not a de Polignac number, because 3139645521469 - 2¹⁵ = 3139645488701 is a prime.

It is a super-2 number, since 2×3139645521469² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3139645321469) 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, 1569822760734 + 1569822760735.

It is an arithmetic number, because the mean of its divisors is an integer number (1569822760735).

Almost surely, 2^{3139645521469} is an apocalyptic number.

It is an amenable number.

3139645521469 is a deficient number, since it is larger than the sum of its proper divisors (1).

3139645521469 is an equidigital number, since it uses as much as digits as its factorization.

3139645521469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20995200, while the sum is 58.

The spelling of 3139645521469 in words is "three trillion, one hundred thirty-nine billion, six hundred forty-five million, five hundred twenty-one thousand, four hundred sixty-nine".