871124621562851 has 4 divisors (see below), whose sum is σ = 871125256769592. Its totient is φ = 871123986356112.

The previous prime is 871124621562827. The next prime is 871124621562911. The reversal of 871124621562851 is 158265126421178.

It is a happy number.

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 871124621562851 - 2¹⁰ = 871124621561827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (871124621862851) 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, 315541805 + ... + 318290558.

It is an arithmetic number, because the mean of its divisors is an integer number (217781314192398).

Almost surely, 2^{871124621562851} is an apocalyptic number.

871124621562851 is a deficient number, since it is larger than the sum of its proper divisors (635206741).

871124621562851 is a wasteful number, since it uses less digits than its factorization.

871124621562851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635206740.

The product of its digits is 12902400, while the sum is 59.

The spelling of 871124621562851 in words is "eight hundred seventy-one trillion, one hundred twenty-four billion, six hundred twenty-one million, five hundred sixty-two thousand, eight hundred fifty-one".