71042355011 has 4 divisors (see below), whose sum is σ = 71169900192. Its totient is φ = 70914809832.

The previous prime is 71042354993. The next prime is 71042355103. The reversal of 71042355011 is 11055324017.

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 71042355011 - 2¹⁸ = 71042092867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71042355611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63771755 + ... + 63772868.

It is an arithmetic number, because the mean of its divisors is an integer number (17792475048).

Almost surely, 2^71042355011 is an apocalyptic number.

71042355011 is a deficient number, since it is larger than the sum of its proper divisors (127545181).

71042355011 is a wasteful number, since it uses less digits than its factorization.

71042355011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127545180.

The product of its (nonzero) digits is 4200, while the sum is 29.

Adding to 71042355011 its reverse (11055324017), we get a palindrome (82097679028).

The spelling of 71042355011 in words is "seventy-one billion, forty-two million, three hundred fifty-five thousand, eleven".