811761487328 has 24 divisors (see below), whose sum is σ = 1743442286040. Its totient is φ = 368982494080.

The previous prime is 811761487301. The next prime is 811761487357. The reversal of 811761487328 is 823784167118.

It is a congruent number.

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, 1153069943 + ... + 1153070646.

It is an arithmetic number, because the mean of its divisors is an integer number (72643428585).

Almost surely, 2^811761487328 is an apocalyptic number.

811761487328 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

811761487328 is an abundant number, since it is smaller than the sum of its proper divisors (931680798712).

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

811761487328 is a wasteful number, since it uses less digits than its factorization.

811761487328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306140610 (or 2306140602 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 56.

The spelling of 811761487328 in words is "eight hundred eleven billion, seven hundred sixty-one million, four hundred eighty-seven thousand, three hundred twenty-eight".