71025705147011 has 4 divisors (see below), whose sum is σ = 71027098651224. Its totient is φ = 71024311642800.

The previous prime is 71025705146989. The next prime is 71025705147071. The reversal of 71025705147011 is 11074150752017.

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 71025705147011 - 2⁶ = 71025705146947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71025705147011.

It is not an unprimeable number, because it can be changed into a prime (71025705147071) 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, 696675650 + ... + 696777591.

It is an arithmetic number, because the mean of its divisors is an integer number (17756774662806).

Almost surely, 2^{71025705147011} is an apocalyptic number.

71025705147011 is a deficient number, since it is larger than the sum of its proper divisors (1393504213).

71025705147011 is a wasteful number, since it uses less digits than its factorization.

71025705147011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393504212.

The product of its (nonzero) digits is 68600, while the sum is 41.

Adding to 71025705147011 its reverse (11074150752017), we get a palindrome (82099855899028).

The spelling of 71025705147011 in words is "seventy-one trillion, twenty-five billion, seven hundred five million, one hundred forty-seven thousand, eleven".