281455919137 has 2 divisors, whose sum is σ = 281455919138. Its totient is φ = 281455919136.

The previous prime is 281455919119. The next prime is 281455919149. The reversal of 281455919137 is 731919554182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251277628176 + 30178290961 = 501276^2 + 173719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281455919137 is a prime.

It is not a weakly prime, because it can be changed into another prime (281455319137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140727959568 + 140727959569.

It is an arithmetic number, because the mean of its divisors is an integer number (140727959569).

Almost surely, 2^281455919137 is an apocalyptic number.

It is an amenable number.

281455919137 is a deficient number, since it is larger than the sum of its proper divisors (1).

281455919137 is an equidigital number, since it uses as much as digits as its factorization.

281455919137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 55.

The spelling of 281455919137 in words is "two hundred eighty-one billion, four hundred fifty-five million, nine hundred nineteen thousand, one hundred thirty-seven".