181436006864 has 40 divisors (see below), whose sum is σ = 401772165888. Its totient is φ = 77754222720.

The previous prime is 181436006839. The next prime is 181436006887. The reversal of 181436006864 is 468600634181.

181436006864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×181436006864² (a number of 23 digits) contains 22 as substring.

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, 3238934 + ... + 3294474.

Almost surely, 2^181436006864 is an apocalyptic number.

181436006864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

181436006864 is an abundant number, since it is smaller than the sum of its proper divisors (220336159024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181436006864 is a wasteful number, since it uses less digits than its factorization.

181436006864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84723 (or 84717 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 181436006864 in words is "one hundred eighty-one billion, four hundred thirty-six million, six thousand, eight hundred sixty-four".