28341631261 has 2 divisors, whose sum is σ = 28341631262. Its totient is φ = 28341631260.

The previous prime is 28341631249. The next prime is 28341631267. The reversal of 28341631261 is 16213614382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18358624036 + 9983007225 = 135494^2 + 99915^2 .

It is a cyclic number.

It is not a de Polignac number, because 28341631261 - 2²³ = 28333242653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28341631261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28341631267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14170815630 + 14170815631.

It is an arithmetic number, because the mean of its divisors is an integer number (14170815631).

Almost surely, 2^28341631261 is an apocalyptic number.

It is an amenable number.

28341631261 is a deficient number, since it is larger than the sum of its proper divisors (1).

28341631261 is an equidigital number, since it uses as much as digits as its factorization.

28341631261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The spelling of 28341631261 in words is "twenty-eight billion, three hundred forty-one million, six hundred thirty-one thousand, two hundred sixty-one".