81842003000 has 32 divisors (see below), whose sum is σ = 191510289360. Its totient is φ = 32736800800.

The previous prime is 81842002993. The next prime is 81842003029. The reversal of 81842003000 is 30024818.

It is a super-2 number, since 2×81842003000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40920002 + ... + 40922001.

Almost surely, 2^81842003000 is an apocalyptic number.

It is an amenable number.

81842003000 is an abundant number, since it is smaller than the sum of its proper divisors (109668286360).

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

81842003000 is a wasteful number, since it uses less digits than its factorization.

81842003000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81842024 (or 81842010 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 81842003000 its reverse (30024818), we get a palindrome (81872027818).

The spelling of 81842003000 in words is "eighty-one billion, eight hundred forty-two million, three thousand".