871453638522 has 16 divisors (see below), whose sum is σ = 1936563641280. Its totient is φ = 290484546156.

The previous prime is 871453638521. The next prime is 871453638533. The reversal of 871453638522 is 225836354178.

871453638522 is a `hidden beast` number, since 8 + 7 + 1 + 4 + 53 + 63 + 8 + 522 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 16138030343 = 871453638522 / (8 + 7 + 1 + 4 + 5 + 3 + 6 + 3 + 8 + 5 + 2 + 2).

It is not an unprimeable number, because it can be changed into a prime (871453638521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8069015118 + ... + 8069015225.

It is an arithmetic number, because the mean of its divisors is an integer number (121035227580).

Almost surely, 2^871453638522 is an apocalyptic number.

871453638522 is an abundant number, since it is smaller than the sum of its proper divisors (1065110002758).

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

871453638522 is a wasteful number, since it uses less digits than its factorization.

871453638522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16138030354 (or 16138030348 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 871453638522 in words is "eight hundred seventy-one billion, four hundred fifty-three million, six hundred thirty-eight thousand, five hundred twenty-two".