145120440023444 has 12 divisors (see below), whose sum is σ = 254323053598068. Its totient is φ = 72456710424000.

The previous prime is 145120440023357. The next prime is 145120440023467. The reversal of 145120440023444 is 444320044021541.

It can be written as a sum of positive squares in 2 ways, for example, as 106355122631044 + 38765317392400 = 10312862^2 + 6226180^2 .

It is a super-2 number, since 2×145120440023444² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145120440023398 and 145120440023407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25877393777 + ... + 25877399384.

It is an arithmetic number, because the mean of its divisors is an integer number (21193587799839).

Almost surely, 2^{145120440023444} is an apocalyptic number.

It is an amenable number.

145120440023444 is a deficient number, since it is larger than the sum of its proper divisors (109202613574624).

145120440023444 is a wasteful number, since it uses less digits than its factorization.

145120440023444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51754793866 (or 51754793864 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 38.

Adding to 145120440023444 its reverse (444320044021541), we get a palindrome (589440484044985).

The spelling of 145120440023444 in words is "one hundred forty-five trillion, one hundred twenty billion, four hundred forty million, twenty-three thousand, four hundred forty-four".