8541129901 has 2 divisors, whose sum is σ = 8541129902. Its totient is φ = 8541129900.

The previous prime is 8541129899. The next prime is 8541129923. The reversal of 8541129901 is 1099211458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6609527401 + 1931602500 = 81299^2 + 43950^2 .

It is a cyclic number.

It is not a de Polignac number, because 8541129901 - 2¹ = 8541129899 is a prime.

Together with 8541129899, 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 (8541129991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270564950 + 4270564951.

It is an arithmetic number, because the mean of its divisors is an integer number (4270564951).

Almost surely, 2^8541129901 is an apocalyptic number.

It is an amenable number.

8541129901 is a deficient number, since it is larger than the sum of its proper divisors (1).

8541129901 is an equidigital number, since it uses as much as digits as its factorization.

8541129901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 8541129901 is about 92418.2335959739. The cubic root of 8541129901 is about 2044.1139827043.

The spelling of 8541129901 in words is "eight billion, five hundred forty-one million, one hundred twenty-nine thousand, nine hundred one".