145041320381 has 2 divisors, whose sum is σ = 145041320382. Its totient is φ = 145041320380.

The previous prime is 145041320297. The next prime is 145041320393. The reversal of 145041320381 is 183023140541.

145041320381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118246576900 + 26794743481 = 343870^2 + 163691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145041320381 is a prime.

It is a super-2 number, since 2×145041320381² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145041320981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72520660190 + 72520660191.

It is an arithmetic number, because the mean of its divisors is an integer number (72520660191).

Almost surely, 2^145041320381 is an apocalyptic number.

It is an amenable number.

145041320381 is a deficient number, since it is larger than the sum of its proper divisors (1).

145041320381 is an equidigital number, since it uses as much as digits as its factorization.

145041320381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 145041320381 in words is "one hundred forty-five billion, forty-one million, three hundred twenty thousand, three hundred eighty-one".