19717960607 has 4 divisors (see below), whose sum is σ = 19820126400. Its totient is φ = 19615794816.

The previous prime is 19717960601. The next prime is 19717960621. The reversal of 19717960607 is 70606971791.

It is a happy number.

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 19717960607 - 2¹⁴ = 19717944223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19717960601) 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, 51082607 + ... + 51082992.

It is an arithmetic number, because the mean of its divisors is an integer number (4955031600).

Almost surely, 2^19717960607 is an apocalyptic number.

19717960607 is a deficient number, since it is larger than the sum of its proper divisors (102165793).

19717960607 is a wasteful number, since it uses less digits than its factorization.

19717960607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102165792.

The product of its (nonzero) digits is 1000188, while the sum is 53.

The spelling of 19717960607 in words is "nineteen billion, seven hundred seventeen million, nine hundred sixty thousand, six hundred seven".