19771259308 has 6 divisors (see below), whose sum is σ = 34599703796. Its totient is φ = 9885629652.

The previous prime is 19771259303. The next prime is 19771259351. The reversal of 19771259308 is 80395217791.

It is not an unprimeable number, because it can be changed into a prime (19771259303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2471407410 + ... + 2471407417.

Almost surely, 2^19771259308 is an apocalyptic number.

It is an amenable number.

19771259308 is a deficient number, since it is larger than the sum of its proper divisors (14828444488).

19771259308 is a wasteful number, since it uses less digits than its factorization.

19771259308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942814831 (or 4942814829 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 19771259308 in words is "nineteen billion, seven hundred seventy-one million, two hundred fifty-nine thousand, three hundred eight".