281479271678149 has 2 divisors, whose sum is σ = 281479271678150. Its totient is φ = 281479271678148.

The previous prime is 281479271678057. The next prime is 281479271678153. The reversal of 281479271678149 is 941876172974182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253212430022500 + 28266841655649 = 15912650^2 + 5316657^2 .

It is a cyclic number.

It is not a de Polignac number, because 281479271678149 - 2⁴¹ = 279280248422597 is a prime.

It is a super-2 number, since 2×281479271678149² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281479271658149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140739635839074 + 140739635839075.

It is an arithmetic number, because the mean of its divisors is an integer number (140739635839075).

Almost surely, 2^{281479271678149} is an apocalyptic number.

It is an amenable number.

281479271678149 is a deficient number, since it is larger than the sum of its proper divisors (1).

281479271678149 is an equidigital number, since it uses as much as digits as its factorization.

281479271678149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 682795008, while the sum is 76.

The spelling of 281479271678149 in words is "two hundred eighty-one trillion, four hundred seventy-nine billion, two hundred seventy-one million, six hundred seventy-eight thousand, one hundred forty-nine".