6539540736931 has 2 divisors, whose sum is σ = 6539540736932. Its totient is φ = 6539540736930.

The previous prime is 6539540736889. The next prime is 6539540736997. The reversal of 6539540736931 is 1396370459356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6539540736931 - 2¹³ = 6539540728739 is a prime.

It is a super-2 number, since 2×6539540736931² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6539540736931.

It is not a weakly prime, because it can be changed into another prime (6539540737931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269770368465 + 3269770368466.

It is an arithmetic number, because the mean of its divisors is an integer number (3269770368466).

Almost surely, 2^{6539540736931} is an apocalyptic number.

6539540736931 is a deficient number, since it is larger than the sum of its proper divisors (1).

6539540736931 is an equidigital number, since it uses as much as digits as its factorization.

6539540736931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55112400, while the sum is 61.

The spelling of 6539540736931 in words is "six trillion, five hundred thirty-nine billion, five hundred forty million, seven hundred thirty-six thousand, nine hundred thirty-one".