145434604440 has 128 divisors (see below), whose sum is σ = 457062912000. Its totient is φ = 36971171328.

The previous prime is 145434604333. The next prime is 145434604457. The reversal of 145434604440 is 44406434541.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10417 + ... + 539423.

It is an arithmetic number, because the mean of its divisors is an integer number (3570804000).

Almost surely, 2^145434604440 is an apocalyptic number.

145434604440 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 145434604440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228531456000).

145434604440 is an abundant number, since it is smaller than the sum of its proper divisors (311628307560).

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

145434604440 is a wasteful number, since it uses less digits than its factorization.

145434604440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529129 (or 529125 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 39.

The spelling of 145434604440 in words is "one hundred forty-five billion, four hundred thirty-four million, six hundred four thousand, four hundred forty".