27953049861909 has 48 divisors (see below), whose sum is σ = 41587755955200. Its totient is φ = 18081533433600.

The previous prime is 27953049861881. The next prime is 27953049861911. The reversal of 27953049861909 is 90916894035972.

27953049861909 is a `hidden beast` number, since 2 + 7 + 9 + 530 + 4 + 9 + 86 + 1 + 9 + 0 + 9 = 666.

It is not a de Polignac number, because 27953049861909 - 2²¹ = 27953047764757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27953049861949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76798852 + ... + 77161970.

It is an arithmetic number, because the mean of its divisors is an integer number (866411582400).

It is a 1-persistent number, because it is pandigital, but 2⋅27953049861909 = 55906099723818 is not.

Almost surely, 2^{27953049861909} is an apocalyptic number.

It is an amenable number.

27953049861909 is a deficient number, since it is larger than the sum of its proper divisors (13634706093291).

27953049861909 is a wasteful number, since it uses less digits than its factorization.

27953049861909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364306 (or 364303 counting only the distinct ones).

The product of its (nonzero) digits is 264539520, while the sum is 72.

The spelling of 27953049861909 in words is "twenty-seven trillion, nine hundred fifty-three billion, forty-nine million, eight hundred sixty-one thousand, nine hundred nine".