145489523941 has 2 divisors, whose sum is σ = 145489523942. Its totient is φ = 145489523940.

The previous prime is 145489523917. The next prime is 145489523969. The reversal of 145489523941 is 149325984541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136860042916 + 8629481025 = 369946^2 + 92895^2 .

It is a cyclic number.

It is not a de Polignac number, because 145489523941 - 2⁹ = 145489523429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145489563941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72744761970 + 72744761971.

It is an arithmetic number, because the mean of its divisors is an integer number (72744761971).

Almost surely, 2^145489523941 is an apocalyptic number.

It is an amenable number.

145489523941 is a deficient number, since it is larger than the sum of its proper divisors (1).

145489523941 is an equidigital number, since it uses as much as digits as its factorization.

145489523941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 55.

The spelling of 145489523941 in words is "one hundred forty-five billion, four hundred eighty-nine million, five hundred twenty-three thousand, nine hundred forty-one".