109144490550 has 192 divisors, whose sum is σ = 289867590144. Its totient is φ = 27082598400.

The previous prime is 109144490531. The next prime is 109144490551. The reversal of 109144490550 is 55094441901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109144490551) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 132617439 + ... + 132618261.

It is an arithmetic number, because the mean of its divisors is an integer number (1509727032).

Almost surely, 2^109144490550 is an apocalyptic number.

109144490550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 109144490550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144933795072).

109144490550 is an abundant number, since it is smaller than the sum of its proper divisors (180723099594).

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

109144490550 is a wasteful number, since it uses less digits than its factorization.

109144490550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 109144490550 in words is "one hundred nine billion, one hundred forty-four million, four hundred ninety thousand, five hundred fifty".