145317786305 has 8 divisors (see below), whose sum is σ = 174474756672. Its totient is φ = 116191953648.

The previous prime is 145317786287. The next prime is 145317786323. The reversal of 145317786305 is 503687713541.

145317786305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145317786287) and next prime (145317786323).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145317786305 - 2³² = 141022819009 is a prime.

It is a super-2 number, since 2×145317786305² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 7774157 + ... + 7792826.

It is an arithmetic number, because the mean of its divisors is an integer number (21809344584).

Almost surely, 2^145317786305 is an apocalyptic number.

It is an amenable number.

145317786305 is a deficient number, since it is larger than the sum of its proper divisors (29156970367).

145317786305 is a wasteful number, since it uses less digits than its factorization.

145317786305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15568855.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 145317786305 in words is "one hundred forty-five billion, three hundred seventeen million, seven hundred eighty-six thousand, three hundred five".