53791917705 has 24 divisors (see below), whose sum is σ = 94516580808. Its totient is φ = 28296020736.

The previous prime is 53791917671. The next prime is 53791917709. The reversal of 53791917705 is 50771919735.

53791917705 is a `hidden beast` number, since 537 + 91 + 9 + 17 + 7 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22359819024 + 31432098681 = 149532^2 + 177291^2 .

It is not a de Polignac number, because 53791917705 - 2⁸ = 53791917449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53791917709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8184222 + ... + 8190791.

It is an arithmetic number, because the mean of its divisors is an integer number (3938190867).

Almost surely, 2^53791917705 is an apocalyptic number.

It is an amenable number.

53791917705 is a deficient number, since it is larger than the sum of its proper divisors (40724663103).

53791917705 is a wasteful number, since it uses less digits than its factorization.

53791917705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16375097 (or 16375094 counting only the distinct ones).

The product of its (nonzero) digits is 2083725, while the sum is 54.

The spelling of 53791917705 in words is "fifty-three billion, seven hundred ninety-one million, nine hundred seventeen thousand, seven hundred five".