19655859345 has 16 divisors (see below), whose sum is σ = 31918770240. Its totient is φ = 10326659904.

The previous prime is 19655859343. The next prime is 19655859371. The reversal of 19655859345 is 54395855691.

It is not a de Polignac number, because 19655859345 - 2¹ = 19655859343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19655859343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9778030 + ... + 9780039.

It is an arithmetic number, because the mean of its divisors is an integer number (1994923140).

Almost surely, 2^19655859345 is an apocalyptic number.

19655859345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19655859345 is a deficient number, since it is larger than the sum of its proper divisors (12262910895).

19655859345 is a wasteful number, since it uses less digits than its factorization.

19655859345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19558144.

The product of its digits is 29160000, while the sum is 60.

The spelling of 19655859345 in words is "nineteen billion, six hundred fifty-five million, eight hundred fifty-nine thousand, three hundred forty-five".