571438139871 has 4 divisors (see below), whose sum is σ = 761917519832. Its totient is φ = 380958759912.

The previous prime is 571438139863. The next prime is 571438139879. The reversal of 571438139871 is 178931834175.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (571438139863) and next prime (571438139879).

It is not a de Polignac number, because 571438139871 - 2³ = 571438139863 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 (571438139879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95239689976 + ... + 95239689981.

It is an arithmetic number, because the mean of its divisors is an integer number (190479379958).

Almost surely, 2^571438139871 is an apocalyptic number.

571438139871 is a deficient number, since it is larger than the sum of its proper divisors (190479379961).

571438139871 is a wasteful number, since it uses less digits than its factorization.

571438139871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190479379960.

The product of its digits is 5080320, while the sum is 57.

The spelling of 571438139871 in words is "five hundred seventy-one billion, four hundred thirty-eight million, one hundred thirty-nine thousand, eight hundred seventy-one".