109989142900 has 144 divisors (see below), whose sum is σ = 294217418880. Its totient is φ = 34755033600.

The previous prime is 109989142889. The next prime is 109989142903. The reversal of 109989142900 is 9241989901.

It is a super-2 number, since 2×109989142900² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109989142903) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5987730 + ... + 6006070.

It is an arithmetic number, because the mean of its divisors is an integer number (2043176520).

Almost surely, 2^109989142900 is an apocalyptic number.

109989142900 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 109989142900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147108709440).

109989142900 is an abundant number, since it is smaller than the sum of its proper divisors (184228275980).

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

109989142900 is a wasteful number, since it uses less digits than its factorization.

109989142900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19034 (or 19027 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 52.

The spelling of 109989142900 in words is "one hundred nine billion, nine hundred eighty-nine million, one hundred forty-two thousand, nine hundred".