19709520268 has 48 divisors (see below), whose sum is σ = 36803289600. Its totient is φ = 9209229120.

The previous prime is 19709520227. The next prime is 19709520289. The reversal of 19709520268 is 86202590791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1938478 + ... + 1948618.

It is an arithmetic number, because the mean of its divisors is an integer number (766735200).

Almost surely, 2^19709520268 is an apocalyptic number.

It is an amenable number.

19709520268 is a deficient number, since it is larger than the sum of its proper divisors (17093769332).

19709520268 is a wasteful number, since it uses less digits than its factorization.

19709520268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10510 (or 10508 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 19709520268 in words is "nineteen billion, seven hundred nine million, five hundred twenty thousand, two hundred sixty-eight".