28108499391560 has 64 divisors (see below), whose sum is σ = 76530704238720. Its totient is φ = 9070305684480.

The previous prime is 28108499391551. The next prime is 28108499391607. The reversal of 28108499391560 is 6519399480182.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2952568706 + ... + 2952578225.

It is an arithmetic number, because the mean of its divisors is an integer number (1195792253730).

Almost surely, 2^{28108499391560} is an apocalyptic number.

28108499391560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28108499391560 is an abundant number, since it is smaller than the sum of its proper divisors (48422204847160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28108499391560 is a wasteful number, since it uses less digits than its factorization.

28108499391560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905146966 (or 5905146962 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 65.

The spelling of 28108499391560 in words is "twenty-eight trillion, one hundred eight billion, four hundred ninety-nine million, three hundred ninety-one thousand, five hundred sixty".