71905040052539 has 2 divisors, whose sum is σ = 71905040052540. Its totient is φ = 71905040052538.

The previous prime is 71905040052499. The next prime is 71905040052563. The reversal of 71905040052539 is 93525004050917.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71905040052539 is a prime.

It is not a weakly prime, because it can be changed into another prime (71905040052739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35952520026269 + 35952520026270.

It is an arithmetic number, because the mean of its divisors is an integer number (35952520026270).

Almost surely, 2^{71905040052539} is an apocalyptic number.

71905040052539 is a deficient number, since it is larger than the sum of its proper divisors (1).

71905040052539 is an equidigital number, since it uses as much as digits as its factorization.

71905040052539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701000, while the sum is 50.

The spelling of 71905040052539 in words is "seventy-one trillion, nine hundred five billion, forty million, fifty-two thousand, five hundred thirty-nine".