909145914541 has 2 divisors, whose sum is σ = 909145914542. Its totient is φ = 909145914540.

The previous prime is 909145914533. The next prime is 909145914569. The reversal of 909145914541 is 145419541909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858003901225 + 51142013316 = 926285^2 + 226146^2 .

It is a cyclic number.

It is not a de Polignac number, because 909145914541 - 2³ = 909145914533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909145114541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454572957270 + 454572957271.

It is an arithmetic number, because the mean of its divisors is an integer number (454572957271).

Almost surely, 2^909145914541 is an apocalyptic number.

It is an amenable number.

909145914541 is a deficient number, since it is larger than the sum of its proper divisors (1).

909145914541 is an equidigital number, since it uses as much as digits as its factorization.

909145914541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The spelling of 909145914541 in words is "nine hundred nine billion, one hundred forty-five million, nine hundred fourteen thousand, five hundred forty-one".