109749691800 has 384 divisors, whose sum is σ = 432838963200. Its totient is φ = 25038720000.

The previous prime is 109749691763. The next prime is 109749691847. The reversal of 109749691800 is 8196947901.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 95 ways as a sum of consecutive naturals, for example, 22715385 + ... + 22720215.

It is an arithmetic number, because the mean of its divisors is an integer number (1127184800).

Almost surely, 2^109749691800 is an apocalyptic number.

109749691800 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 109749691800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216419481600).

109749691800 is an abundant number, since it is smaller than the sum of its proper divisors (323089271400).

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

109749691800 is a wasteful number, since it uses less digits than its factorization.

109749691800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464 (or 5449 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 109749691800 in words is "one hundred nine billion, seven hundred forty-nine million, six hundred ninety-one thousand, eight hundred".