181000564016 has 10 divisors (see below), whose sum is σ = 350688592812. Its totient is φ = 90500282000.

The previous prime is 181000563923. The next prime is 181000564037. The reversal of 181000564016 is 610465000181.

It is a super-2 number, since 2×181000564016² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656267610 + ... + 5656267641.

Almost surely, 2^181000564016 is an apocalyptic number.

181000564016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

181000564016 is a deficient number, since it is larger than the sum of its proper divisors (169688028796).

181000564016 is a wasteful number, since it uses less digits than its factorization.

181000564016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312535259 (or 11312535253 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

Adding to 181000564016 its reverse (610465000181), we get a palindrome (791465564197).

The spelling of 181000564016 in words is "one hundred eighty-one billion, five hundred sixty-four thousand, sixteen".