28363105879808 has 144 divisors (see below), whose sum is σ = 66464290798080. Its totient is φ = 11824912355328.

The previous prime is 28363105879807. The next prime is 28363105879879. The reversal of 28363105879808 is 80897850136382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28363105879807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389764835 + ... + 389837597.

Almost surely, 2^{28363105879808} is an apocalyptic number.

28363105879808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28363105879808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33232145399040).

28363105879808 is an abundant number, since it is smaller than the sum of its proper divisors (38101184918272).

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

28363105879808 is an equidigital number, since it uses as much as digits as its factorization.

28363105879808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78702 (or 78688 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 68.

The spelling of 28363105879808 in words is "twenty-eight trillion, three hundred sixty-three billion, one hundred five million, eight hundred seventy-nine thousand, eight hundred eight".