813888127532 has 12 divisors (see below), whose sum is σ = 1424321416056. Its totient is φ = 406939151520.

The previous prime is 813888127511. The next prime is 813888127571. The reversal of 813888127532 is 235721888318.

It is a super-2 number, since 2×813888127532² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841769 + ... + 1528512.

It is an arithmetic number, because the mean of its divisors is an integer number (118693451338).

Almost surely, 2^813888127532 is an apocalyptic number.

It is an amenable number.

813888127532 is a deficient number, since it is larger than the sum of its proper divisors (610433288524).

813888127532 is a wasteful number, since it uses less digits than its factorization.

813888127532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456128 (or 2456126 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 56.

The spelling of 813888127532 in words is "eight hundred thirteen billion, eight hundred eighty-eight million, one hundred twenty-seven thousand, five hundred thirty-two".