28601836169 has 2 divisors, whose sum is σ = 28601836170. Its totient is φ = 28601836168.

The previous prime is 28601836147. The next prime is 28601836171. The reversal of 28601836169 is 96163810682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28010373769 + 591462400 = 167363^2 + 24320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28601836169 is a prime.

It is a super-2 number, since 2×28601836169² (a number of 22 digits) contains 22 as substring.

Together with 28601836171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28601836129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300918084 + 14300918085.

It is an arithmetic number, because the mean of its divisors is an integer number (14300918085).

Almost surely, 2^28601836169 is an apocalyptic number.

It is an amenable number.

28601836169 is a deficient number, since it is larger than the sum of its proper divisors (1).

28601836169 is an equidigital number, since it uses as much as digits as its factorization.

28601836169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 28601836169 in words is "twenty-eight billion, six hundred one million, eight hundred thirty-six thousand, one hundred sixty-nine".