145423452320441 has 4 divisors (see below), whose sum is σ = 150114531427584. Its totient is φ = 140732373213300.

The previous prime is 145423452320429. The next prime is 145423452320449. The reversal of 145423452320441 is 144023254324541.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145423452320441 is a prime.

It is a super-2 number, since 2×145423452320441² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145423452320392 and 145423452320401.

It is not an unprimeable number, because it can be changed into a prime (145423452320449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2345539553525 + ... + 2345539553586.

It is an arithmetic number, because the mean of its divisors is an integer number (37528632856896).

Almost surely, 2^{145423452320441} is an apocalyptic number.

It is an amenable number.

145423452320441 is a deficient number, since it is larger than the sum of its proper divisors (4691079107143).

145423452320441 is an equidigital number, since it uses as much as digits as its factorization.

145423452320441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691079107142.

The product of its (nonzero) digits is 1843200, while the sum is 44.

The spelling of 145423452320441 in words is "one hundred forty-five trillion, four hundred twenty-three billion, four hundred fifty-two million, three hundred twenty thousand, four hundred forty-one".