181001130000 has 100 divisors (see below), whose sum is σ = 584295877968. Its totient is φ = 48266960000.

The previous prime is 181001129971. The next prime is 181001130019. The reversal of 181001130000 is 31100181.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×181001130000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2986686 + ... + 3046685.

Almost surely, 2^181001130000 is an apocalyptic number.

181001130000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181001130000 is an abundant number, since it is smaller than the sum of its proper divisors (403294747968).

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

181001130000 is an equidigital number, since it uses as much as digits as its factorization.

181001130000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6033402 (or 6033381 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 181001130000 its reverse (31100181), we get a palindrome (181032230181).

The spelling of 181001130000 in words is "one hundred eighty-one billion, one million, one hundred thirty thousand".