145304705217071 has 4 divisors (see below), whose sum is σ = 145401639645000. Its totient is φ = 145207770789144.

The previous prime is 145304705217053. The next prime is 145304705217101. The reversal of 145304705217071 is 170712507403541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145304705217071 - 2³⁸ = 145029827310127 is a prime.

It is a super-2 number, since 2×145304705217071² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145304705217031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48467211716 + ... + 48467214713.

It is an arithmetic number, because the mean of its divisors is an integer number (36350409911250).

Almost surely, 2^{145304705217071} is an apocalyptic number.

145304705217071 is a deficient number, since it is larger than the sum of its proper divisors (96934427929).

145304705217071 is an equidigital number, since it uses as much as digits as its factorization.

145304705217071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96934427928.

The product of its (nonzero) digits is 823200, while the sum is 47.

The spelling of 145304705217071 in words is "one hundred forty-five trillion, three hundred four billion, seven hundred five million, two hundred seventeen thousand, seventy-one".