19956680708 has 6 divisors (see below), whose sum is σ = 34924191246. Its totient is φ = 9978340352.

The previous prime is 19956680699. The next prime is 19956680717. The reversal of 19956680708 is 80708665991.

It is an interprime number because it is at equal distance from previous prime (19956680699) and next prime (19956680717).

It can be written as a sum of positive squares in only one way, i.e., 13859881984 + 6096798724 = 117728^2 + 78082^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2494585085 + ... + 2494585092.

It is an arithmetic number, because the mean of its divisors is an integer number (5820698541).

Almost surely, 2^19956680708 is an apocalyptic number.

It is an amenable number.

19956680708 is a deficient number, since it is larger than the sum of its proper divisors (14967510538).

19956680708 is a wasteful number, since it uses less digits than its factorization.

19956680708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989170181 (or 4989170179 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 19956680708 in words is "nineteen billion, nine hundred fifty-six million, six hundred eighty thousand, seven hundred eight".