181214988700 has 36 divisors (see below), whose sum is σ = 394247500920. Its totient is φ = 72299640640.

The previous prime is 181214988671. The next prime is 181214988701. The reversal of 181214988700 is 7889412181.

It is a super-2 number, since 2×181214988700² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181214988701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2290342 + ... + 2368141.

It is an arithmetic number, because the mean of its divisors is an integer number (10951319470).

Almost surely, 2^181214988700 is an apocalyptic number.

181214988700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181214988700 is an abundant number, since it is smaller than the sum of its proper divisors (213032512220).

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

181214988700 is a wasteful number, since it uses less digits than its factorization.

181214988700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658886 (or 4658879 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 49.

The spelling of 181214988700 in words is "one hundred eighty-one billion, two hundred fourteen million, nine hundred eighty-eight thousand, seven hundred".