81792522992 has 40 divisors (see below), whose sum is σ = 159021161280. Its totient is φ = 40754954240.

The previous prime is 81792522947. The next prime is 81792523037. The reversal of 81792522992 is 29922529718.

It is an interprime number because it is at equal distance from previous prime (81792522947) and next prime (81792523037).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11750009 + ... + 11756967.

It is an arithmetic number, because the mean of its divisors is an integer number (3975529032).

Almost surely, 2^81792522992 is an apocalyptic number.

It is an amenable number.

81792522992 is a deficient number, since it is larger than the sum of its proper divisors (77228638288).

81792522992 is a wasteful number, since it uses less digits than its factorization.

81792522992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9401 (or 9395 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 56.

The spelling of 81792522992 in words is "eighty-one billion, seven hundred ninety-two million, five hundred twenty-two thousand, nine hundred ninety-two".