20017051699 has 8 divisors (see below), whose sum is σ = 20487121920. Its totient is φ = 19548822216.

The previous prime is 20017051697. The next prime is 20017051711. The reversal of 20017051699 is 99615071002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20017051699 - 2¹ = 20017051697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20017051697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438169 + ... + 481690.

It is an arithmetic number, because the mean of its divisors is an integer number (2560890240).

Almost surely, 2^20017051699 is an apocalyptic number.

20017051699 is a deficient number, since it is larger than the sum of its proper divisors (470070221).

20017051699 is an equidigital number, since it uses as much as digits as its factorization.

20017051699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920369.

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 20017051699 in words is "twenty billion, seventeen million, fifty-one thousand, six hundred ninety-nine".