28080164969 has 2 divisors, whose sum is σ = 28080164970. Its totient is φ = 28080164968.

The previous prime is 28080164929. The next prime is 28080164977. The reversal of 28080164969 is 96946108082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27610142569 + 470022400 = 166163^2 + 21680^2 .

It is a cyclic number.

It is not a de Polignac number, because 28080164969 - 2⁸ = 28080164713 is a prime.

It is a super-2 number, since 2×28080164969² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28080164969.

It is not a weakly prime, because it can be changed into another prime (28080164929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040082484 + 14040082485.

It is an arithmetic number, because the mean of its divisors is an integer number (14040082485).

Almost surely, 2^28080164969 is an apocalyptic number.

It is an amenable number.

28080164969 is a deficient number, since it is larger than the sum of its proper divisors (1).

28080164969 is an equidigital number, since it uses as much as digits as its factorization.

28080164969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 28080164969 in words is "twenty-eight billion, eighty million, one hundred sixty-four thousand, nine hundred sixty-nine".