20669265019 has 16 divisors (see below), whose sum is σ = 22543345440. Its totient is φ = 18837262080.

The previous prime is 20669265013. The next prime is 20669265061. The reversal of 20669265019 is 91056296602.

It is not a de Polignac number, because 20669265019 - 2⁹ = 20669264507 is a prime.

It is a super-2 number, since 2×20669265019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20669265019.

It is not an unprimeable number, because it can be changed into a prime (20669265013) 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, 304687 + ... + 366295.

It is an arithmetic number, because the mean of its divisors is an integer number (1408959090).

Almost surely, 2^20669265019 is an apocalyptic number.

20669265019 is a deficient number, since it is larger than the sum of its proper divisors (1874080421).

20669265019 is a wasteful number, since it uses less digits than its factorization.

20669265019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61950.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 20669265019 in words is "twenty billion, six hundred sixty-nine million, two hundred sixty-five thousand, nineteen".