28539529345 has 8 divisors (see below), whose sum is σ = 34493820480. Its totient is φ = 22667366640.

The previous prime is 28539529313. The next prime is 28539529351. The reversal of 28539529345 is 54392593582.

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

It is not a de Polignac number, because 28539529345 - 2⁵ = 28539529313 is a prime.

It is a super-2 number, since 2×28539529345² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20531341 + ... + 20532730.

It is an arithmetic number, because the mean of its divisors is an integer number (4311727560).

Almost surely, 2^28539529345 is an apocalyptic number.

It is an amenable number.

28539529345 is a deficient number, since it is larger than the sum of its proper divisors (5954291135).

28539529345 is a wasteful number, since it uses less digits than its factorization.

28539529345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41064215.

The product of its digits is 11664000, while the sum is 55.

The spelling of 28539529345 in words is "twenty-eight billion, five hundred thirty-nine million, five hundred twenty-nine thousand, three hundred forty-five".