7145534412220 has 96 divisors (see below), whose sum is σ = 16040075103360. Its totient is φ = 2664405688320.

The previous prime is 7145534412199. The next prime is 7145534412223. The reversal of 7145534412220 is 222144355417.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145534412223) 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, 102880905 + ... + 102950335.

It is an arithmetic number, because the mean of its divisors is an integer number (167084115660).

Almost surely, 2^{7145534412220} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7145534412220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8020037551680).

7145534412220 is an abundant number, since it is smaller than the sum of its proper divisors (8894540691140).

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

7145534412220 is a wasteful number, since it uses less digits than its factorization.

7145534412220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72343 (or 72341 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 40.

Adding to 7145534412220 its reverse (222144355417), we get a palindrome (7367678767637).

The spelling of 7145534412220 in words is "seven trillion, one hundred forty-five billion, five hundred thirty-four million, four hundred twelve thousand, two hundred twenty".