81012396182 has 8 divisors (see below), whose sum is σ = 124482462552. Its totient is φ = 39518242000.

The previous prime is 81012396163. The next prime is 81012396259. The reversal of 81012396182 is 28169321018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 493977944 + ... + 493978107.

It is an arithmetic number, because the mean of its divisors is an integer number (15560307819).

Almost surely, 2^81012396182 is an apocalyptic number.

81012396182 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

81012396182 is a deficient number, since it is larger than the sum of its proper divisors (43470066370).

81012396182 is a wasteful number, since it uses less digits than its factorization.

81012396182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987956094.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 81012396182 in words is "eighty-one billion, twelve million, three hundred ninety-six thousand, one hundred eighty-two".