81850432827 has 8 divisors (see below), whose sum is σ = 109162698064. Its totient is φ = 54552561408.

The previous prime is 81850432813. The next prime is 81850432841. The reversal of 81850432827 is 72823405818.

It is an interprime number because it is at equal distance from previous prime (81850432813) and next prime (81850432841).

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

It is not a de Polignac number, because 81850432827 - 2¹⁵ = 81850400059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81850431827) 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, 3585178 + ... + 3607935.

It is an arithmetic number, because the mean of its divisors is an integer number (13645337258).

Almost surely, 2^81850432827 is an apocalyptic number.

81850432827 is a deficient number, since it is larger than the sum of its proper divisors (27312265237).

81850432827 is a wasteful number, since it uses less digits than its factorization.

81850432827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196909.

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 81850432827 in words is "eighty-one billion, eight hundred fifty million, four hundred thirty-two thousand, eight hundred twenty-seven".