281137340069 has 2 divisors, whose sum is σ = 281137340070. Its totient is φ = 281137340068.

The previous prime is 281137340059. The next prime is 281137340087. The reversal of 281137340069 is 960043731182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170105103844 + 111032236225 = 412438^2 + 333215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281137340069 is a prime.

It is a super-2 number, since 2×281137340069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281137340059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140568670034 + 140568670035.

It is an arithmetic number, because the mean of its divisors is an integer number (140568670035).

Almost surely, 2^281137340069 is an apocalyptic number.

It is an amenable number.

281137340069 is a deficient number, since it is larger than the sum of its proper divisors (1).

281137340069 is an equidigital number, since it uses as much as digits as its factorization.

281137340069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 281137340069 in words is "two hundred eighty-one billion, one hundred thirty-seven million, three hundred forty thousand, sixty-nine".