71051133646663 has 4 divisors (see below), whose sum is σ = 71740950478288. Its totient is φ = 70361316815040.

The previous prime is 71051133646643. The next prime is 71051133646711. The reversal of 71051133646663 is 36664633115017.

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 71051133646663 - 2³³ = 71042543712071 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 71051133646663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71051133646643) 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, 344908415658 + ... + 344908415863.

It is an arithmetic number, because the mean of its divisors is an integer number (17935237619572).

Almost surely, 2^{71051133646663} is an apocalyptic number.

71051133646663 is a deficient number, since it is larger than the sum of its proper divisors (689816831625).

71051133646663 is a wasteful number, since it uses less digits than its factorization.

71051133646663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689816831624.

The product of its (nonzero) digits is 4898880, while the sum is 52.

The spelling of 71051133646663 in words is "seventy-one trillion, fifty-one billion, one hundred thirty-three million, six hundred forty-six thousand, six hundred sixty-three".