281301990769 has 2 divisors, whose sum is σ = 281301990770. Its totient is φ = 281301990768.

The previous prime is 281301990649. The next prime is 281301990791. The reversal of 281301990769 is 967099103182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230457603600 + 50844387169 = 480060^2 + 225487^2 .

It is a cyclic number.

It is not a de Polignac number, because 281301990769 - 2²⁷ = 281167773041 is a prime.

It is a super-2 number, since 2×281301990769² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (281301990269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140650995384 + 140650995385.

It is an arithmetic number, because the mean of its divisors is an integer number (140650995385).

Almost surely, 2^281301990769 is an apocalyptic number.

It is an amenable number.

281301990769 is a deficient number, since it is larger than the sum of its proper divisors (1).

281301990769 is an equidigital number, since it uses as much as digits as its factorization.

281301990769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 281301990769 in words is "two hundred eighty-one billion, three hundred one million, nine hundred ninety thousand, seven hundred sixty-nine".