871625538717 has 8 divisors (see below), whose sum is σ = 1162176405696. Its totient is φ = 581079182112.

The previous prime is 871625538689. The next prime is 871625538737. The reversal of 871625538717 is 717835526178.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 871625538717 - 2³⁶ = 802906061981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871625538737) 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 7 ways as a sum of consecutive naturals, for example, 647473 + ... + 1470534.

It is an arithmetic number, because the mean of its divisors is an integer number (145272050712).

Almost surely, 2^871625538717 is an apocalyptic number.

It is an amenable number.

871625538717 is a deficient number, since it is larger than the sum of its proper divisors (290550866979).

871625538717 is a wasteful number, since it uses less digits than its factorization.

871625538717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255187.

The product of its digits is 19756800, while the sum is 60.

The spelling of 871625538717 in words is "eight hundred seventy-one billion, six hundred twenty-five million, five hundred thirty-eight thousand, seven hundred seventeen".