109639540444 has 24 divisors (see below), whose sum is σ = 232177851360. Its totient is φ = 44224352256.

The previous prime is 109639540441. The next prime is 109639540481. The reversal of 109639540444 is 444045936901.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109639540441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 115167109 + ... + 115168060.

It is an arithmetic number, because the mean of its divisors is an integer number (9674077140).

Almost surely, 2^109639540444 is an apocalyptic number.

109639540444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

109639540444 is an abundant number, since it is smaller than the sum of its proper divisors (122538310916).

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

109639540444 is a wasteful number, since it uses less digits than its factorization.

109639540444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230335197 (or 230335195 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 109639540444 in words is "one hundred nine billion, six hundred thirty-nine million, five hundred forty thousand, four hundred forty-four".