81884518083 has 16 divisors (see below), whose sum is σ = 123891471360. Its totient is φ = 53428195368.

The previous prime is 81884518061. The next prime is 81884518087. The reversal of 81884518083 is 38081548818.

81884518083 is a `hidden beast` number, since 8 + 188 + 451 + 8 + 0 + 8 + 3 = 666.

It is not a de Polignac number, because 81884518083 - 2⁶ = 81884518019 is a prime.

It is a super-3 number, since 3×81884518083³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (81884518087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32262135 + ... + 32264672.

It is an arithmetic number, because the mean of its divisors is an integer number (7743216960).

Almost surely, 2^81884518083 is an apocalyptic number.

81884518083 is a deficient number, since it is larger than the sum of its proper divisors (42006953277).

81884518083 is a wasteful number, since it uses less digits than its factorization.

81884518083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64526863 (or 64526857 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 54.

The spelling of 81884518083 in words is "eighty-one billion, eight hundred eighty-four million, five hundred eighteen thousand, eighty-three".