8041539654509 has 2 divisors, whose sum is σ = 8041539654510. Its totient is φ = 8041539654508.

The previous prime is 8041539654503. The next prime is 8041539654523. The reversal of 8041539654509 is 9054569351408.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4113810232009 + 3927729422500 = 2028253^2 + 1981850^2 .

It is a cyclic number.

It is not a de Polignac number, because 8041539654509 - 2²⁴ = 8041522877293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8041539654503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4020769827254 + 4020769827255.

It is an arithmetic number, because the mean of its divisors is an integer number (4020769827255).

Almost surely, 2^{8041539654509} is an apocalyptic number.

It is an amenable number.

8041539654509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8041539654509 is an equidigital number, since it uses as much as digits as its factorization.

8041539654509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328000, while the sum is 59.

The spelling of 8041539654509 in words is "eight trillion, forty-one billion, five hundred thirty-nine million, six hundred fifty-four thousand, five hundred nine".