19968788627 has 4 divisors (see below), whose sum is σ = 19977032400. Its totient is φ = 19960544856.

The previous prime is 19968788603. The next prime is 19968788689. The reversal of 19968788627 is 72688786991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19968788627 - 2⁶ = 19968788563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19968488627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4118252 + ... + 4123097.

It is an arithmetic number, because the mean of its divisors is an integer number (4994258100).

Almost surely, 2^19968788627 is an apocalyptic number.

19968788627 is a deficient number, since it is larger than the sum of its proper divisors (8243773).

19968788627 is an equidigital number, since it uses as much as digits as its factorization.

19968788627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243772.

The product of its digits is 146313216, while the sum is 71.

The spelling of 19968788627 in words is "nineteen billion, nine hundred sixty-eight million, seven hundred eighty-eight thousand, six hundred twenty-seven".