28077143185 has 16 divisors (see below), whose sum is σ = 41467781376. Its totient is φ = 17771905728.

The previous prime is 28077143173. The next prime is 28077143231. The reversal of 28077143185 is 58134177082.

It is a cyclic number.

It is not a de Polignac number, because 28077143185 - 2⁵ = 28077143153 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, 30853549 + ... + 30854458.

It is an arithmetic number, because the mean of its divisors is an integer number (2591736336).

Almost surely, 2^28077143185 is an apocalyptic number.

It is an amenable number.

28077143185 is a deficient number, since it is larger than the sum of its proper divisors (13390638191).

28077143185 is a wasteful number, since it uses less digits than its factorization.

28077143185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61708032.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 28077143185 in words is "twenty-eight billion, seventy-seven million, one hundred forty-three thousand, one hundred eighty-five".