28091616355 has 16 divisors (see below), whose sum is σ = 37556918784. Its totient is φ = 19995578080.

The previous prime is 28091616331. The next prime is 28091616373. The reversal of 28091616355 is 55361619082.

It is not a de Polignac number, because 28091616355 - 2¹¹ = 28091614307 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5430997 + ... + 5436166.

It is an arithmetic number, because the mean of its divisors is an integer number (2347307424).

Almost surely, 2^28091616355 is an apocalyptic number.

28091616355 is a deficient number, since it is larger than the sum of its proper divisors (9465302429).

28091616355 is a wasteful number, since it uses less digits than its factorization.

28091616355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10867226.

The product of its (nonzero) digits is 388800, while the sum is 46.

It can be divided in two parts, 28091 and 616355, that added together give a palindrome (644446).

The spelling of 28091616355 in words is "twenty-eight billion, ninety-one million, six hundred sixteen thousand, three hundred fifty-five".