109103638644 has 432 divisors, whose sum is σ = 386002431360. Its totient is φ = 25254028800.

The previous prime is 109103638627. The next prime is 109103638691. The reversal of 109103638644 is 446836301901.

109103638644 is a `hidden beast` number, since 1 + 0 + 9 + 1 + 0 + 3 + 638 + 6 + 4 + 4 = 666.

109103638644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 109103638644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11490739 + ... + 11500229.

Almost surely, 2^109103638644 is an apocalyptic number.

109103638644 is a gapful number since it is divisible by the number (14) 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 109103638644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193001215680).

109103638644 is an abundant number, since it is smaller than the sum of its proper divisors (276898792716).

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

109103638644 is a wasteful number, since it uses less digits than its factorization.

109103638644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9572 (or 9556 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

It can be divided in two parts, 109103 and 638644, that added together give a palindrome (747747).

The spelling of 109103638644 in words is "one hundred nine billion, one hundred three million, six hundred thirty-eight thousand, six hundred forty-four".