20116717347761 has 32 divisors (see below), whose sum is σ = 21090320476800. Its totient is φ = 19168399249920.

The previous prime is 20116717347703. The next prime is 20116717347773. The reversal of 20116717347761 is 16774371761102.

It is a happy number.

It is not a de Polignac number, because 20116717347761 - 2¹⁴ = 20116717331377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116717347791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 617648285 + ... + 617680853.

It is an arithmetic number, because the mean of its divisors is an integer number (659072514900).

Almost surely, 2^{20116717347761} is an apocalyptic number.

It is an amenable number.

20116717347761 is a deficient number, since it is larger than the sum of its proper divisors (973603129039).

20116717347761 is a wasteful number, since it uses less digits than its factorization.

20116717347761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33729.

The product of its (nonzero) digits is 2074464, while the sum is 53.

The spelling of 20116717347761 in words is "twenty trillion, one hundred sixteen billion, seven hundred seventeen million, three hundred forty-seven thousand, seven hundred sixty-one".