71571326783 has 4 divisors (see below), whose sum is σ = 78077811048. Its totient is φ = 65064842520.

The previous prime is 71571326767. The next prime is 71571326807. The reversal of 71571326783 is 38762317517.

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 71571326783 - 2⁴ = 71571326767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71571326483) 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, 3253242116 + ... + 3253242137.

It is an arithmetic number, because the mean of its divisors is an integer number (19519452762).

Almost surely, 2^71571326783 is an apocalyptic number.

71571326783 is a deficient number, since it is larger than the sum of its proper divisors (6506484265).

71571326783 is a wasteful number, since it uses less digits than its factorization.

71571326783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6506484264.

The product of its digits is 1481760, while the sum is 50.

The spelling of 71571326783 in words is "seventy-one billion, five hundred seventy-one million, three hundred twenty-six thousand, seven hundred eighty-three".