28199846493 has 168 divisors, whose sum is σ = 55109234880. Its totient is φ = 14083580160.

The previous prime is 28199846473. The next prime is 28199846497. The reversal of 28199846493 is 39464899182.

28199846493 is a `hidden beast` number, since 2 + 8 + 19 + 98 + 46 + 493 = 666.

It is not a de Polignac number, because 28199846493 - 2⁵ = 28199846461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 28199846493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28199846497) by changing a digit.

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 167 ways as a sum of consecutive naturals, for example, 16384873 + ... + 16386593.

It is an arithmetic number, because the mean of its divisors is an integer number (328031160).

Almost surely, 2^28199846493 is an apocalyptic number.

It is an amenable number.

28199846493 is a deficient number, since it is larger than the sum of its proper divisors (26909388387).

28199846493 is a wasteful number, since it uses less digits than its factorization.

28199846493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791 (or 1763 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 28199846493 in words is "twenty-eight billion, one hundred ninety-nine million, eight hundred forty-six thousand, four hundred ninety-three".