52568541691 has 4 divisors (see below), whose sum is σ = 53050822000. Its totient is φ = 52086261384.

The previous prime is 52568541677. The next prime is 52568541731. The reversal of 52568541691 is 19614586525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52568541691 - 2⁷ = 52568541563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52568541191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241139991 + ... + 241140208.

It is an arithmetic number, because the mean of its divisors is an integer number (13262705500).

Almost surely, 2^52568541691 is an apocalyptic number.

52568541691 is a deficient number, since it is larger than the sum of its proper divisors (482280309).

52568541691 is a wasteful number, since it uses less digits than its factorization.

52568541691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482280308.

The product of its digits is 2592000, while the sum is 52.

The spelling of 52568541691 in words is "fifty-two billion, five hundred sixty-eight million, five hundred forty-one thousand, six hundred ninety-one".