145471305986 has 8 divisors (see below), whose sum is σ = 218357762880.
Its totient is φ = 72685385028.
The previous prime is 145471305979. The next prime is 145471305997. The reversal of 145471305986 is 689503174541.
145471305986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
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 3 ways as a sum of consecutive naturals, for example, 25130366 + ... + 25136153.
It is an arithmetic number, because the mean of its divisors is an integer number (27294720360).
Almost surely, 2145471305986 is an apocalyptic number.
145471305986 is a deficient number, since it is larger than the sum of its proper divisors (72886456894).
145471305986 is a wasteful number, since it uses less digits than its factorization.
145471305986 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 50267968.
The product of its (nonzero) digits is 3628800, while the sum is 53.
The spelling of 145471305986 in words is "one hundred forty-five billion, four hundred seventy-one million, three hundred five thousand, nine hundred eighty-six".