28127028545 has 32 divisors (see below), whose sum is σ = 42201734400. Its totient is φ = 17483408640.

The previous prime is 28127028539. The next prime is 28127028577. The reversal of 28127028545 is 54582072182.

It is not a de Polignac number, because 28127028545 - 2⁴ = 28127028529 is a prime.

It is a super-2 number, since 2×28127028545² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28127028496 and 28127028505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29699 + ... + 239031.

It is an arithmetic number, because the mean of its divisors is an integer number (1318804200).

Almost surely, 2^28127028545 is an apocalyptic number.

It is an amenable number.

28127028545 is a deficient number, since it is larger than the sum of its proper divisors (14074705855).

28127028545 is a wasteful number, since it uses less digits than its factorization.

28127028545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209705.

The product of its (nonzero) digits is 358400, while the sum is 44.

The spelling of 28127028545 in words is "twenty-eight billion, one hundred twenty-seven million, twenty-eight thousand, five hundred forty-five".