71433946887 has 4 divisors (see below), whose sum is σ = 95245262520. Its totient is φ = 47622631256.

The previous prime is 71433946853. The next prime is 71433946889. The reversal of 71433946887 is 78864933417.

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 71433946887 - 2¹² = 71433942791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71433946887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71433946889) 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, 11905657812 + ... + 11905657817.

It is an arithmetic number, because the mean of its divisors is an integer number (23811315630).

Almost surely, 2^71433946887 is an apocalyptic number.

71433946887 is a deficient number, since it is larger than the sum of its proper divisors (23811315633).

71433946887 is a wasteful number, since it uses less digits than its factorization.

71433946887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23811315632.

The product of its digits is 24385536, while the sum is 60.

The spelling of 71433946887 in words is "seventy-one billion, four hundred thirty-three million, nine hundred forty-six thousand, eight hundred eighty-seven".