871522440438 has 32 divisors (see below), whose sum is σ = 1878377760000. Its totient is φ = 267981821856.

The previous prime is 871522440431. The next prime is 871522440457. The reversal of 871522440438 is 834044225178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871522440431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3610018 + ... + 3843861.

It is an arithmetic number, because the mean of its divisors is an integer number (58699305000).

Almost surely, 2^871522440438 is an apocalyptic number.

871522440438 is an abundant number, since it is smaller than the sum of its proper divisors (1006855319562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871522440438 is a wasteful number, since it uses less digits than its factorization.

871522440438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7455396.

The product of its (nonzero) digits is 1720320, while the sum is 48.

The spelling of 871522440438 in words is "eight hundred seventy-one billion, five hundred twenty-two million, four hundred forty thousand, four hundred thirty-eight".