811688130432 has 48 divisors (see below), whose sum is σ = 2335717149480. Its totient is φ = 270562709760.

The previous prime is 811688130403. The next prime is 811688130437. The reversal of 811688130432 is 234031886118.

811688130432 is a `hidden beast` number, since 8 + 1 + 1 + 6 + 88 + 130 + 432 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811688130437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 352294044 + ... + 352296347.

Almost surely, 2^811688130432 is an apocalyptic number.

It is an amenable number.

811688130432 is an abundant number, since it is smaller than the sum of its proper divisors (1524029019048).

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

811688130432 is a wasteful number, since it uses less digits than its factorization.

811688130432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704590411 (or 704590396 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 811688130432 in words is "eight hundred eleven billion, six hundred eighty-eight million, one hundred thirty thousand, four hundred thirty-two".