52543666858 has 4 divisors (see below), whose sum is σ = 78815500290. Its totient is φ = 26271833428.

The previous prime is 52543666843. The next prime is 52543666859. The reversal of 52543666858 is 85866634525.

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

It can be written as a sum of positive squares in only one way, i.e., 52508347609 + 35319249 = 229147^2 + 5943^2 .

It is not an unprimeable number, because it can be changed into a prime (52543666859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13135916713 + ... + 13135916716.

Almost surely, 2^52543666858 is an apocalyptic number.

52543666858 is a deficient number, since it is larger than the sum of its proper divisors (26271833432).

52543666858 is a wasteful number, since it uses less digits than its factorization.

52543666858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26271833431.

The product of its digits is 41472000, while the sum is 58.

The spelling of 52543666858 in words is "fifty-two billion, five hundred forty-three million, six hundred sixty-six thousand, eight hundred fifty-eight".