145413523420 has 96 divisors (see below), whose sum is σ = 346920247296. Its totient is φ = 50718796800.

The previous prime is 145413523397. The next prime is 145413523429. The reversal of 145413523420 is 24325314541.

It is a super-2 number, since 2×145413523420² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145413523429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 676317 + ... + 865003.

It is an arithmetic number, because the mean of its divisors is an integer number (3613752576).

Almost surely, 2^145413523420 is an apocalyptic number.

145413523420 is a gapful number since it is divisible by the number (10) 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 145413523420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173460123648).

145413523420 is an abundant number, since it is smaller than the sum of its proper divisors (201506723876).

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

145413523420 is a wasteful number, since it uses less digits than its factorization.

145413523420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188851 (or 188849 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 145413523420 its reverse (24325314541), we get a palindrome (169738837961).

The spelling of 145413523420 in words is "one hundred forty-five billion, four hundred thirteen million, five hundred twenty-three thousand, four hundred twenty".