145181939728 has 80 divisors (see below), whose sum is σ = 322416149760. Its totient is φ = 62038867968.

The previous prime is 145181939723. The next prime is 145181939759. The reversal of 145181939728 is 827939181541.

It is not an unprimeable number, because it can be changed into a prime (145181939723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103038288 + ... + 103039696.

It is an arithmetic number, because the mean of its divisors is an integer number (4030201872).

Almost surely, 2^145181939728 is an apocalyptic number.

It is an amenable number.

145181939728 is an abundant number, since it is smaller than the sum of its proper divisors (177234210032).

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

145181939728 is a wasteful number, since it uses less digits than its factorization.

145181939728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464 (or 3458 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 58.

The spelling of 145181939728 in words is "one hundred forty-five billion, one hundred eighty-one million, nine hundred thirty-nine thousand, seven hundred twenty-eight".