5991373746409 has 2 divisors, whose sum is σ = 5991373746410. Its totient is φ = 5991373746408.

The previous prime is 5991373746263. The next prime is 5991373746469. The reversal of 5991373746409 is 9046473731995.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4214591384809 + 1776782361600 = 2052947^2 + 1332960^2 .

It is a cyclic number.

It is not a de Polignac number, because 5991373746409 - 2¹¹ = 5991373744361 is a prime.

It is not a weakly prime, because it can be changed into another prime (5991373746469) 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, 2995686873204 + 2995686873205.

It is an arithmetic number, because the mean of its divisors is an integer number (2995686873205).

Almost surely, 2^{5991373746409} is an apocalyptic number.

It is an amenable number.

5991373746409 is a deficient number, since it is larger than the sum of its proper divisors (1).

5991373746409 is an equidigital number, since it uses as much as digits as its factorization.

5991373746409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 154314720, while the sum is 67.

The spelling of 5991373746409 in words is "five trillion, nine hundred ninety-one billion, three hundred seventy-three million, seven hundred forty-six thousand, four hundred nine".