145045236961 has 4 divisors (see below), whose sum is σ = 147210091312. Its totient is φ = 142880382612.

The previous prime is 145045236913. The next prime is 145045236977. The reversal of 145045236961 is 169632540541.

145045236961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169632540541 = 389 ⋅436073369.

It is a cyclic number.

It is not a de Polignac number, because 145045236961 - 2⁹ = 145045236449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145045236761) 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 in 3 ways as a sum of consecutive naturals, for example, 1082427075 + ... + 1082427208.

It is an arithmetic number, because the mean of its divisors is an integer number (36802522828).

Almost surely, 2^145045236961 is an apocalyptic number.

It is an amenable number.

145045236961 is a deficient number, since it is larger than the sum of its proper divisors (2164854351).

145045236961 is an equidigital number, since it uses as much as digits as its factorization.

145045236961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164854350.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 145045236961 in words is "one hundred forty-five billion, forty-five million, two hundred thirty-six thousand, nine hundred sixty-one".