52918235687 has 4 divisors (see below), whose sum is σ = 53151355896. Its totient is φ = 52685115480.

The previous prime is 52918235633. The next prime is 52918235693. The reversal of 52918235687 is 78653281925.

It is a happy number.

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 52918235687 - 2¹² = 52918231591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52918235287) 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, 116559764 + ... + 116560217.

It is an arithmetic number, because the mean of its divisors is an integer number (13287838974).

Almost surely, 2^52918235687 is an apocalyptic number.

52918235687 is a deficient number, since it is larger than the sum of its proper divisors (233120209).

52918235687 is a wasteful number, since it uses less digits than its factorization.

52918235687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233120208.

The product of its digits is 7257600, while the sum is 56.

The spelling of 52918235687 in words is "fifty-two billion, nine hundred eighteen million, two hundred thirty-five thousand, six hundred eighty-seven".