28566636213 has 8 divisors (see below), whose sum is σ = 39118276768. Its totient is φ = 18529709904.

The previous prime is 28566636199. The next prime is 28566636223. The reversal of 28566636213 is 31263666582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28566636213 - 2⁶ = 28566636149 is a prime.

It is a super-3 number, since 3×28566636213³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28566636223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128678431 + ... + 128678652.

It is an arithmetic number, because the mean of its divisors is an integer number (4889784596).

Almost surely, 2^28566636213 is an apocalyptic number.

It is an amenable number.

28566636213 is a deficient number, since it is larger than the sum of its proper divisors (10551640555).

28566636213 is a wasteful number, since it uses less digits than its factorization.

28566636213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257357123.

The product of its digits is 1866240, while the sum is 48.

The spelling of 28566636213 in words is "twenty-eight billion, five hundred sixty-six million, six hundred thirty-six thousand, two hundred thirteen".