20116717653377 has 4 divisors (see below), whose sum is σ = 20155329396036. Its totient is φ = 20078105910720.

The previous prime is 20116717653317. The next prime is 20116717653413. The reversal of 20116717653377 is 77335671761102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11408175004801 + 8708542648576 = 3377599^2 + 2951024^2 .

It is a cyclic number.

It is not a de Polignac number, because 20116717653377 - 2⁶ = 20116717653313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116717653317) 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, 19305870548 + ... + 19305871589.

It is an arithmetic number, because the mean of its divisors is an integer number (5038832349009).

Almost surely, 2^{20116717653377} is an apocalyptic number.

It is an amenable number.

20116717653377 is a deficient number, since it is larger than the sum of its proper divisors (38611742659).

20116717653377 is an equidigital number, since it uses as much as digits as its factorization.

20116717653377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38611742658.

The product of its (nonzero) digits is 7779240, while the sum is 56.

The spelling of 20116717653377 in words is "twenty trillion, one hundred sixteen billion, seven hundred seventeen million, six hundred fifty-three thousand, three hundred seventy-seven".