81824630382 has 48 divisors (see below), whose sum is σ = 200566783872. Its totient is φ = 24795340920.

The previous prime is 81824630309. The next prime is 81824630399. The reversal of 81824630382 is 28303642818.

81824630382 is a `hidden beast` number, since 8 + 1 + 8 + 2 + 4 + 630 + 3 + 8 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7647538 + ... + 7658229.

It is an arithmetic number, because the mean of its divisors is an integer number (4178474664).

Almost surely, 2^81824630382 is an apocalyptic number.

81824630382 is an abundant number, since it is smaller than the sum of its proper divisors (118742153490).

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

81824630382 is a wasteful number, since it uses less digits than its factorization.

81824630382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15305795 (or 15305783 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 81824630382 in words is "eighty-one billion, eight hundred twenty-four million, six hundred thirty thousand, three hundred eighty-two".