19440099105 has 32 divisors (see below), whose sum is σ = 36773395200. Its totient is φ = 8580456192.

The previous prime is 19440099079. The next prime is 19440099139. The reversal of 19440099105 is 50199004491.

It is a happy number.

It is not a de Polignac number, because 19440099105 - 2¹⁰ = 19440098081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3189090 + ... + 3195179.

It is an arithmetic number, because the mean of its divisors is an integer number (1149168600).

Almost surely, 2^19440099105 is an apocalyptic number.

19440099105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19440099105 is a deficient number, since it is larger than the sum of its proper divisors (17333296095).

19440099105 is a wasteful number, since it uses less digits than its factorization.

19440099105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6384313.

The product of its (nonzero) digits is 58320, while the sum is 42.

The spelling of 19440099105 in words is "nineteen billion, four hundred forty million, ninety-nine thousand, one hundred five".