19919119101 has 32 divisors (see below), whose sum is σ = 30700087296. Its totient is φ = 11252520000.

The previous prime is 19919119081. The next prime is 19919119159. The reversal of 19919119101 is 10191191991.

It is not a de Polignac number, because 19919119101 - 2¹⁰ = 19919118077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19919119301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1458816 + ... + 1472406.

It is an arithmetic number, because the mean of its divisors is an integer number (959377728).

Almost surely, 2^19919119101 is an apocalyptic number.

It is an amenable number.

19919119101 is a deficient number, since it is larger than the sum of its proper divisors (10780968195).

19919119101 is a wasteful number, since it uses less digits than its factorization.

19919119101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14393.

The product of its (nonzero) digits is 6561, while the sum is 42.

The spelling of 19919119101 in words is "nineteen billion, nine hundred nineteen million, one hundred nineteen thousand, one hundred one".