145405301023 has 4 divisors (see below), whose sum is σ = 148499030880. Its totient is φ = 142311571168.

The previous prime is 145405300969. The next prime is 145405301057. The reversal of 145405301023 is 320103504541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320103504541 = 70849 ⋅4518109.

It is a cyclic number.

It is not a de Polignac number, because 145405301023 - 2³³ = 136815366431 is a prime.

It is a super-2 number, since 2×145405301023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145405300982 and 145405301000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145405301123) 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, 1546864858 + ... + 1546864951.

It is an arithmetic number, because the mean of its divisors is an integer number (37124757720).

Almost surely, 2^145405301023 is an apocalyptic number.

145405301023 is a deficient number, since it is larger than the sum of its proper divisors (3093729857).

145405301023 is an equidigital number, since it uses as much as digits as its factorization.

145405301023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093729856.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 145405301023 its reverse (320103504541), we get a palindrome (465508805564).

The spelling of 145405301023 in words is "one hundred forty-five billion, four hundred five million, three hundred one thousand, twenty-three".