145471305985 has 16 divisors (see below), whose sum is σ = 175388774400. Its totient is φ = 115828482240.

The previous prime is 145471305979. The next prime is 145471305997. The reversal of 145471305985 is 589503174541.

145471305985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145471305985 - 2¹⁵ = 145471273217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5853616 + ... + 5878414.

It is an arithmetic number, because the mean of its divisors is an integer number (10961798400).

Almost surely, 2^145471305985 is an apocalyptic number.

It is an amenable number.

145471305985 is a deficient number, since it is larger than the sum of its proper divisors (29917468415).

145471305985 is a wasteful number, since it uses less digits than its factorization.

145471305985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30288.

The product of its (nonzero) digits is 3024000, while the sum is 52.

The spelling of 145471305985 in words is "one hundred forty-five billion, four hundred seventy-one million, three hundred five thousand, nine hundred eighty-five".