145321126445404 has 144 divisors (see below), whose sum is σ = 338521134899808. Its totient is φ = 53916732076032.

The previous prime is 145321126445401. The next prime is 145321126445471. The reversal of 145321126445404 is 404544621123541.

It is a super-2 number, since 2×145321126445404² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145321126445401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6331032 + ... + 18185824.

It is an arithmetic number, because the mean of its divisors is an integer number (2350841214582).

Almost surely, 2^{145321126445404} is an apocalyptic number.

145321126445404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145321126445404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169260567449904).

145321126445404 is an abundant number, since it is smaller than the sum of its proper divisors (193200008454404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145321126445404 is a wasteful number, since it uses less digits than its factorization.

145321126445404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11855124 (or 11855115 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 46.

Adding to 145321126445404 its reverse (404544621123541), we get a palindrome (549865747568945).

The spelling of 145321126445404 in words is "one hundred forty-five trillion, three hundred twenty-one billion, one hundred twenty-six million, four hundred forty-five thousand, four hundred four".