52009775991 has 12 divisors (see below), whose sum is σ = 75127248768. Its totient is φ = 34672253184.

The previous prime is 52009775969. The next prime is 52009775999. The reversal of 52009775991 is 19957790025.

It is not a de Polignac number, because 52009775991 - 2¹¹ = 52009773943 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52009775999) 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 11 ways as a sum of consecutive naturals, for example, 512791 + ... + 605783.

It is an arithmetic number, because the mean of its divisors is an integer number (6260604064).

Almost surely, 2^52009775991 is an apocalyptic number.

52009775991 is a deficient number, since it is larger than the sum of its proper divisors (23117472777).

52009775991 is a wasteful number, since it uses less digits than its factorization.

52009775991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155142 (or 155139 counting only the distinct ones).

The product of its (nonzero) digits is 1786050, while the sum is 54.

The spelling of 52009775991 in words is "fifty-two billion, nine million, seven hundred seventy-five thousand, nine hundred ninety-one".