19879840101 has 8 divisors (see below), whose sum is σ = 28916131104. Its totient is φ = 12048387920.

The previous prime is 19879840093. The next prime is 19879840133. The reversal of 19879840101 is 10104897891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19879840101 - 2³ = 19879840093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19879840501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301209666 + ... + 301209731.

It is an arithmetic number, because the mean of its divisors is an integer number (3614516388).

Almost surely, 2^19879840101 is an apocalyptic number.

19879840101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19879840101 is a deficient number, since it is larger than the sum of its proper divisors (9036291003).

19879840101 is a wasteful number, since it uses less digits than its factorization.

19879840101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602419411.

The product of its (nonzero) digits is 145152, while the sum is 48.

The spelling of 19879840101 in words is "nineteen billion, eight hundred seventy-nine million, eight hundred forty thousand, one hundred one".