81830353351 has 8 divisors (see below), whose sum is σ = 82076040704. Its totient is φ = 81584985240.

The previous prime is 81830353321. The next prime is 81830353361. The reversal of 81830353351 is 15335303818.

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

It is a cyclic number.

It is not a de Polignac number, because 81830353351 - 2²⁷ = 81696135623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81830353301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438646 + ... + 596716.

It is an arithmetic number, because the mean of its divisors is an integer number (10259505088).

Almost surely, 2^81830353351 is an apocalyptic number.

81830353351 is a deficient number, since it is larger than the sum of its proper divisors (245687353).

81830353351 is a wasteful number, since it uses less digits than its factorization.

81830353351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159621.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 81830353351 in words is "eighty-one billion, eight hundred thirty million, three hundred fifty-three thousand, three hundred fifty-one".