145221116464 has 80 divisors (see below), whose sum is σ = 308882452480. Its totient is φ = 65883248640.

The previous prime is 145221116461. The next prime is 145221116477. The reversal of 145221116464 is 464611122541.

It is not an unprimeable number, because it can be changed into a prime (145221116461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834697 + ... + 993559.

It is an arithmetic number, because the mean of its divisors is an integer number (3861030656).

Almost surely, 2^145221116464 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 145221116464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154441226240).

145221116464 is an abundant number, since it is smaller than the sum of its proper divisors (163661336016).

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

145221116464 is a wasteful number, since it uses less digits than its factorization.

145221116464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159018 (or 159012 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The spelling of 145221116464 in words is "one hundred forty-five billion, two hundred twenty-one million, one hundred sixteen thousand, four hundred sixty-four".