28137104866 has 16 divisors (see below), whose sum is σ = 45598408128. Its totient is φ = 12944595600.

The previous prime is 28137104861. The next prime is 28137104867. The reversal of 28137104866 is 66840173182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28137104861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1731780 + ... + 1747951.

It is an arithmetic number, because the mean of its divisors is an integer number (2849900508).

Almost surely, 2^28137104866 is an apocalyptic number.

28137104866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28137104866 is a deficient number, since it is larger than the sum of its proper divisors (17461303262).

28137104866 is a wasteful number, since it uses less digits than its factorization.

28137104866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480057.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 28137104866 in words is "twenty-eight billion, one hundred thirty-seven million, one hundred four thousand, eight hundred sixty-six".