8540725836991 has 2 divisors, whose sum is σ = 8540725836992. Its totient is φ = 8540725836990.

The previous prime is 8540725836989. The next prime is 8540725836997. The reversal of 8540725836991 is 1996385270458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8540725836991 - 2¹ = 8540725836989 is a prime.

Together with 8540725836989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8540725836997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270362918495 + 4270362918496.

It is an arithmetic number, because the mean of its divisors is an integer number (4270362918496).

It is a 2-persistent number, because it is pandigital, and so is 2⋅8540725836991 = 17081451673982, but 3⋅8540725836991 = 25622177510973 is not.

Almost surely, 2^{8540725836991} is an apocalyptic number.

8540725836991 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540725836991 is an equidigital number, since it uses as much as digits as its factorization.

8540725836991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 130636800, while the sum is 67.

The spelling of 8540725836991 in words is "eight trillion, five hundred forty billion, seven hundred twenty-five million, eight hundred thirty-six thousand, nine hundred ninety-one".