281336268061 has 2 divisors, whose sum is σ = 281336268062. Its totient is φ = 281336268060.

The previous prime is 281336267879. The next prime is 281336268107. The reversal of 281336268061 is 160862633182.

It is an a-pointer prime, because the next prime (281336268107) can be obtained adding 281336268061 to its sum of digits (46).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280735724025 + 600544036 = 529845^2 + 24506^2 .

It is a cyclic number.

It is not a de Polignac number, because 281336268061 - 2³³ = 272746333469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281336265061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140668134030 + 140668134031.

It is an arithmetic number, because the mean of its divisors is an integer number (140668134031).

Almost surely, 2^281336268061 is an apocalyptic number.

It is an amenable number.

281336268061 is a deficient number, since it is larger than the sum of its proper divisors (1).

281336268061 is an equidigital number, since it uses as much as digits as its factorization.

281336268061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 281336268061 in words is "two hundred eighty-one billion, three hundred thirty-six million, two hundred sixty-eight thousand, sixty-one".