20828000269 has 2 divisors, whose sum is σ = 20828000270. Its totient is φ = 20828000268.

The previous prime is 20828000251. The next prime is 20828000399. The reversal of 20828000269 is 96200082802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19319610025 + 1508390244 = 138995^2 + 38838^2 .

It is a cyclic number.

It is not a de Polignac number, because 20828000269 - 2¹³ = 20827992077 is a prime.

It is a super-2 number, since 2×20828000269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20828001269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10414000134 + 10414000135.

It is an arithmetic number, because the mean of its divisors is an integer number (10414000135).

Almost surely, 2^20828000269 is an apocalyptic number.

It is an amenable number.

20828000269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20828000269 is an equidigital number, since it uses as much as digits as its factorization.

20828000269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 20828000269 in words is "twenty billion, eight hundred twenty-eight million, two hundred sixty-nine", and thus it is an aban number.