28689011067998 has 4 divisors (see below), whose sum is σ = 43033516602000. Its totient is φ = 14344505533998.

The previous prime is 28689011067989. The next prime is 28689011068009. The reversal of 28689011067998 is 89976011098682.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7172252766998 + ... + 7172252767001.

It is an arithmetic number, because the mean of its divisors is an integer number (10758379150500).

Almost surely, 2^{28689011067998} is an apocalyptic number.

28689011067998 is a deficient number, since it is larger than the sum of its proper divisors (14344505534002).

28689011067998 is a wasteful number, since it uses less digits than its factorization.

28689011067998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344505534001.

The product of its (nonzero) digits is 188116992, while the sum is 74.

The spelling of 28689011067998 in words is "twenty-eight trillion, six hundred eighty-nine billion, eleven million, sixty-seven thousand, nine hundred ninety-eight".