181798613760 has 144 divisors (see below), whose sum is σ = 580796745984. Its totient is φ = 48464818176.

The previous prime is 181798613753. The next prime is 181798613833. The reversal of 181798613760 is 67316897181.

It is a happy number.

It is a super-2 number, since 2×181798613760² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 181798613760.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19206789 + ... + 19216251.

It is an arithmetic number, because the mean of its divisors is an integer number (4033310736).

Almost surely, 2^181798613760 is an apocalyptic number.

181798613760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181798613760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290398372992).

181798613760 is an abundant number, since it is smaller than the sum of its proper divisors (398998132224).

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

181798613760 is an equidigital number, since it uses as much as digits as its factorization.

181798613760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14490 (or 14476 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 181798613760 in words is "one hundred eighty-one billion, seven hundred ninety-eight million, six hundred thirteen thousand, seven hundred sixty".