145211052220 has 96 divisors (see below), whose sum is σ = 330445180800. Its totient is φ = 53283225600.

The previous prime is 145211052209. The next prime is 145211052241. The reversal of 145211052220 is 22250112541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82834864 + ... + 82836616.

It is an arithmetic number, because the mean of its divisors is an integer number (3442137300).

Almost surely, 2^145211052220 is an apocalyptic number.

145211052220 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 145211052220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165222590400).

145211052220 is an abundant number, since it is smaller than the sum of its proper divisors (185234128580).

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

145211052220 is a wasteful number, since it uses less digits than its factorization.

145211052220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 145211052220 its reverse (22250112541), we get a palindrome (167461164761).

The spelling of 145211052220 in words is "one hundred forty-five billion, two hundred eleven million, fifty-two thousand, two hundred twenty".