19479706065 has 32 divisors (see below), whose sum is σ = 35747712000. Its totient is φ = 10054039680.

The previous prime is 19479706033. The next prime is 19479706069. The reversal of 19479706065 is 56060797491.

It is not a de Polignac number, because 19479706065 - 2⁵ = 19479706033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19479706069) 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, 2323140 + ... + 2331509.

It is an arithmetic number, because the mean of its divisors is an integer number (1117116000).

Almost surely, 2^19479706065 is an apocalyptic number.

19479706065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19479706065 is a deficient number, since it is larger than the sum of its proper divisors (16268005935).

19479706065 is a wasteful number, since it uses less digits than its factorization.

19479706065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654694 (or 4654688 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 19479706065 in words is "nineteen billion, four hundred seventy-nine million, seven hundred six thousand, sixty-five".