81830356814 has 8 divisors (see below), whose sum is σ = 122751725520. Its totient is φ = 40913114976.

The previous prime is 81830356807. The next prime is 81830356877. The reversal of 81830356814 is 41865303818.

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

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, 981659 + ... + 1061750.

It is an arithmetic number, because the mean of its divisors is an integer number (15343965690).

Almost surely, 2^81830356814 is an apocalyptic number.

81830356814 is a deficient number, since it is larger than the sum of its proper divisors (40921368706).

81830356814 is a wasteful number, since it uses less digits than its factorization.

81830356814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063434.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 81830356814 in words is "eighty-one billion, eight hundred thirty million, three hundred fifty-six thousand, eight hundred fourteen".