28873121659 has 2 divisors, whose sum is σ = 28873121660. Its totient is φ = 28873121658.

The previous prime is 28873121621. The next prime is 28873121701. The reversal of 28873121659 is 95612137882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28873121659 - 2²⁷ = 28738903931 is a prime.

It is not a weakly prime, because it can be changed into another prime (28873121059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14436560829 + 14436560830.

It is an arithmetic number, because the mean of its divisors is an integer number (14436560830).

Almost surely, 2^28873121659 is an apocalyptic number.

28873121659 is a deficient number, since it is larger than the sum of its proper divisors (1).

28873121659 is an equidigital number, since it uses as much as digits as its factorization.

28873121659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 52.

The spelling of 28873121659 in words is "twenty-eight billion, eight hundred seventy-three million, one hundred twenty-one thousand, six hundred fifty-nine".