20171706607 has 4 divisors (see below), whose sum is σ = 21723376360. Its totient is φ = 18620036856.

The previous prime is 20171706601. The next prime is 20171706631. The reversal of 20171706607 is 70660717102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20171706607 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 (20171706601) 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 in 3 ways as a sum of consecutive naturals, for example, 775834857 + ... + 775834882.

It is an arithmetic number, because the mean of its divisors is an integer number (5430844090).

Almost surely, 2^20171706607 is an apocalyptic number.

20171706607 is a deficient number, since it is larger than the sum of its proper divisors (1551669753).

20171706607 is a wasteful number, since it uses less digits than its factorization.

20171706607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551669752.

The product of its (nonzero) digits is 24696, while the sum is 37.

The spelling of 20171706607 in words is "twenty billion, one hundred seventy-one million, seven hundred six thousand, six hundred seven".