28586645511 has 8 divisors (see below), whose sum is σ = 40357617264. Its totient is φ = 17936718720.

The previous prime is 28586645509. The next prime is 28586645533. The reversal of 28586645511 is 11554668582.

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

It is not a de Polignac number, because 28586645511 - 2¹ = 28586645509 is a prime.

It is a super-2 number, since 2×28586645511² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 560522461 = 28586645511 / (2 + 8 + 5 + 8 + 6 + 6 + 4 + 5 + 5 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28586645551) 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, 280261180 + ... + 280261281.

It is an arithmetic number, because the mean of its divisors is an integer number (5044702158).

Almost surely, 2^28586645511 is an apocalyptic number.

28586645511 is a deficient number, since it is larger than the sum of its proper divisors (11770971753).

28586645511 is a wasteful number, since it uses less digits than its factorization.

28586645511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560522481.

The product of its digits is 2304000, while the sum is 51.

The spelling of 28586645511 in words is "twenty-eight billion, five hundred eighty-six million, six hundred forty-five thousand, five hundred eleven".