28500912269 has 2 divisors, whose sum is σ = 28500912270. Its totient is φ = 28500912268.

The previous prime is 28500912257. The next prime is 28500912347. The reversal of 28500912269 is 96221900582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27863955625 + 636956644 = 166925^2 + 25238^2 .

It is a cyclic number.

It is not a de Polignac number, because 28500912269 - 2²⁸ = 28232476813 is a prime.

It is a super-2 number, since 2×28500912269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28500912169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14250456134 + 14250456135.

It is an arithmetic number, because the mean of its divisors is an integer number (14250456135).

Almost surely, 2^28500912269 is an apocalyptic number.

It is an amenable number.

28500912269 is a deficient number, since it is larger than the sum of its proper divisors (1).

28500912269 is an equidigital number, since it uses as much as digits as its factorization.

28500912269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 28500912269 in words is "twenty-eight billion, five hundred million, nine hundred twelve thousand, two hundred sixty-nine".