20071694717 has 4 divisors (see below), whose sum is σ = 20944377120. Its totient is φ = 19199012316.

The previous prime is 20071694707. The next prime is 20071694719. The reversal of 20071694717 is 71749617002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20071694717 - 2²⁴ = 20054917501 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 (20071694719) 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, 436341167 + ... + 436341212.

It is an arithmetic number, because the mean of its divisors is an integer number (5236094280).

Almost surely, 2^20071694717 is an apocalyptic number.

It is an amenable number.

20071694717 is a deficient number, since it is larger than the sum of its proper divisors (872682403).

20071694717 is an equidigital number, since it uses as much as digits as its factorization.

20071694717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872682402.

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 20071694717 in words is "twenty billion, seventy-one million, six hundred ninety-four thousand, seven hundred seventeen".