19514879965 has 16 divisors (see below), whose sum is σ = 27202008960. Its totient is φ = 13162259520.

The previous prime is 19514879957. The next prime is 19514879977. The reversal of 19514879965 is 56997841591.

It is not a de Polignac number, because 19514879965 - 2³ = 19514879957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19514879897 and 19514879906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4568095 + ... + 4572364.

It is an arithmetic number, because the mean of its divisors is an integer number (1700125560).

Almost surely, 2^19514879965 is an apocalyptic number.

It is an amenable number.

19514879965 is a deficient number, since it is larger than the sum of its proper divisors (7687128995).

19514879965 is an equidigital number, since it uses as much as digits as its factorization.

19514879965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9140532.

The product of its digits is 24494400, while the sum is 64.

The spelling of 19514879965 in words is "nineteen billion, five hundred fourteen million, eight hundred seventy-nine thousand, nine hundred sixty-five".