71434863663 has 4 divisors (see below), whose sum is σ = 95246484888. Its totient is φ = 47623242440.

The previous prime is 71434863649. The next prime is 71434863739. The reversal of 71434863663 is 36636843417.

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 71434863663 - 2¹⁸ = 71434601519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71434862663) 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, 11905810608 + ... + 11905810613.

It is an arithmetic number, because the mean of its divisors is an integer number (23811621222).

Almost surely, 2^71434863663 is an apocalyptic number.

71434863663 is a deficient number, since it is larger than the sum of its proper divisors (23811621225).

71434863663 is a wasteful number, since it uses less digits than its factorization.

71434863663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23811621224.

The product of its digits is 5225472, while the sum is 51.

The spelling of 71434863663 in words is "seventy-one billion, four hundred thirty-four million, eight hundred sixty-three thousand, six hundred sixty-three".