8072640539 has 2 divisors, whose sum is σ = 8072640540. Its totient is φ = 8072640538.

The previous prime is 8072640503. The next prime is 8072640577. The reversal of 8072640539 is 9350462708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8072640539 - 2¹² = 8072636443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8072640539.

It is not a weakly prime, because it can be changed into another prime (8072640139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4036320269 + 4036320270.

It is an arithmetic number, because the mean of its divisors is an integer number (4036320270).

Almost surely, 2^8072640539 is an apocalyptic number.

8072640539 is a deficient number, since it is larger than the sum of its proper divisors (1).

8072640539 is an equidigital number, since it uses as much as digits as its factorization.

8072640539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 8072640539 is about 89847.8744267220. The cubic root of 8072640539 is about 2006.0351484236.

The spelling of 8072640539 in words is "eight billion, seventy-two million, six hundred forty thousand, five hundred thirty-nine".