28285159336531 has 8 divisors (see below), whose sum is σ = 28522935912960. Its totient is φ = 28048236536832.

The previous prime is 28285159336513. The next prime is 28285159336571. The reversal of 28285159336531 is 13563395158282.

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

It is a cyclic number.

It is not a de Polignac number, because 28285159336531 - 2⁷ = 28285159336403 is a prime.

It is a super-2 number, since 2×28285159336531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28285159336531.

It is not an unprimeable number, because it can be changed into a prime (28285159336571) 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, 213377646 + ... + 213510163.

It is an arithmetic number, because the mean of its divisors is an integer number (3565366989120).

Almost surely, 2^{28285159336531} is an apocalyptic number.

28285159336531 is a deficient number, since it is larger than the sum of its proper divisors (237776576429).

28285159336531 is a wasteful number, since it uses less digits than its factorization.

28285159336531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426888365.

The product of its digits is 46656000, while the sum is 61.

The spelling of 28285159336531 in words is "twenty-eight trillion, two hundred eighty-five billion, one hundred fifty-nine million, three hundred thirty-six thousand, five hundred thirty-one".