2145736457071 has 4 divisors (see below), whose sum is σ = 2148878092392. Its totient is φ = 2142594821752.

The previous prime is 2145736457027. The next prime is 2145736457089. The reversal of 2145736457071 is 1707546375412.

It is a happy number.

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 2145736457071 - 2¹⁹ = 2145735932783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145736457171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1570816636 + ... + 1570818001.

It is an arithmetic number, because the mean of its divisors is an integer number (537219523098).

Almost surely, 2^{2145736457071} is an apocalyptic number.

2145736457071 is a deficient number, since it is larger than the sum of its proper divisors (3141635321).

2145736457071 is an equidigital number, since it uses as much as digits as its factorization.

2145736457071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141635320.

The product of its (nonzero) digits is 4939200, while the sum is 52.

The spelling of 2145736457071 in words is "two trillion, one hundred forty-five billion, seven hundred thirty-six million, four hundred fifty-seven thousand, seventy-one".