145452981137 has 2 divisors, whose sum is σ = 145452981138. Its totient is φ = 145452981136.

The previous prime is 145452981133. The next prime is 145452981217. The reversal of 145452981137 is 731189254541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135048165121 + 10404816016 = 367489^2 + 102004^2 .

It is a cyclic number.

It is not a de Polignac number, because 145452981137 - 2² = 145452981133 is a prime.

It is not a weakly prime, because it can be changed into another prime (145452981133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72726490568 + 72726490569.

It is an arithmetic number, because the mean of its divisors is an integer number (72726490569).

Almost surely, 2^145452981137 is an apocalyptic number.

It is an amenable number.

145452981137 is a deficient number, since it is larger than the sum of its proper divisors (1).

145452981137 is an equidigital number, since it uses as much as digits as its factorization.

145452981137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The spelling of 145452981137 in words is "one hundred forty-five billion, four hundred fifty-two million, nine hundred eighty-one thousand, one hundred thirty-seven".