28617880355 has 4 divisors (see below), whose sum is σ = 34341456432. Its totient is φ = 22894304280.

The previous prime is 28617880307. The next prime is 28617880363. The reversal of 28617880355 is 55308871682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55308871682 = 2 ⋅27654435841.

It is a de Polignac number, because none of the positive numbers 2^k-28617880355 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28617880297 and 28617880306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2861788031 + ... + 2861788040.

It is an arithmetic number, because the mean of its divisors is an integer number (8585364108).

Almost surely, 2^28617880355 is an apocalyptic number.

28617880355 is a deficient number, since it is larger than the sum of its proper divisors (5723576077).

28617880355 is an equidigital number, since it uses as much as digits as its factorization.

28617880355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723576076.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 28617880355 in words is "twenty-eight billion, six hundred seventeen million, eight hundred eighty thousand, three hundred fifty-five".