145520530000 has 100 divisors (see below), whose sum is σ = 353665765728. Its totient is φ = 57985840000.

The previous prime is 145520529967. The next prime is 145520530037. The reversal of 145520530000 is 35025541.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2602335 + ... + 2657665.

Almost surely, 2^145520530000 is an apocalyptic number.

145520530000 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 145520530000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176832882864).

145520530000 is an abundant number, since it is smaller than the sum of its proper divisors (208145235728).

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

145520530000 is an equidigital number, since it uses as much as digits as its factorization.

145520530000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55622 (or 55601 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 145520530000 its reverse (35025541), we get a palindrome (145555555541).

The spelling of 145520530000 in words is "one hundred forty-five billion, five hundred twenty million, five hundred thirty thousand".