28919701017198 has 16 divisors (see below), whose sum is σ = 64266002260560. Its totient is φ = 9639900339048.

The previous prime is 28919701017197. The next prime is 28919701017217. The reversal of 28919701017198 is 89171010791982.

28919701017198 is a `hidden beast` number, since 289 + 1 + 97 + 0 + 10 + 171 + 98 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28919701017197) 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, 267775009365 + ... + 267775009472.

It is an arithmetic number, because the mean of its divisors is an integer number (4016625141285).

Almost surely, 2^{28919701017198} is an apocalyptic number.

28919701017198 is an abundant number, since it is smaller than the sum of its proper divisors (35346301243362).

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

28919701017198 is a wasteful number, since it uses less digits than its factorization.

28919701017198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535550018848 (or 535550018842 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 63.

The spelling of 28919701017198 in words is "twenty-eight trillion, nine hundred nineteen billion, seven hundred one million, seventeen thousand, one hundred ninety-eight".