181994050016 has 48 divisors (see below), whose sum is σ = 359034152400. Its totient is φ = 90810974208.

The previous prime is 181994049989. The next prime is 181994050039. The reversal of 181994050016 is 610050499181.

181994050016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56818271 + ... + 56821473.

It is an arithmetic number, because the mean of its divisors is an integer number (7479878175).

Almost surely, 2^181994050016 is an apocalyptic number.

181994050016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

181994050016 is a deficient number, since it is larger than the sum of its proper divisors (177040102384).

181994050016 is a wasteful number, since it uses less digits than its factorization.

181994050016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291 (or 6283 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 181994050016 in words is "one hundred eighty-one billion, nine hundred ninety-four million, fifty thousand, sixteen".