28193658555 has 16 divisors (see below), whose sum is σ = 45116773920. Its totient is φ = 15034311168.

The previous prime is 28193658529. The next prime is 28193658607. The reversal of 28193658555 is 55585639182.

It is not a de Polignac number, because 28193658555 - 2⁸ = 28193658299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28193658495 and 28193658504.

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, 40740 + ... + 240929.

It is an arithmetic number, because the mean of its divisors is an integer number (2819798370).

Almost surely, 2^28193658555 is an apocalyptic number.

28193658555 is a deficient number, since it is larger than the sum of its proper divisors (16923115365).

28193658555 is a wasteful number, since it uses less digits than its factorization.

28193658555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288350.

The product of its digits is 12960000, while the sum is 57.

The spelling of 28193658555 in words is "twenty-eight billion, one hundred ninety-three million, six hundred fifty-eight thousand, five hundred fifty-five".