20116765255065 has 64 divisors (see below), whose sum is σ = 33343634188800. Its totient is φ = 10348763019264.

The previous prime is 20116765255061. The next prime is 20116765255087. The reversal of 20116765255065 is 56055256761102.

It is not a de Polignac number, because 20116765255065 - 2² = 20116765255061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20116765254999 and 20116765255017.

It is not an unprimeable number, because it can be changed into a prime (20116765255061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29273476 + ... + 29952794.

It is an arithmetic number, because the mean of its divisors is an integer number (520994284200).

Almost surely, 2^{20116765255065} is an apocalyptic number.

It is an amenable number.

20116765255065 is a deficient number, since it is larger than the sum of its proper divisors (13226868933735).

20116765255065 is a wasteful number, since it uses less digits than its factorization.

20116765255065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679826.

The product of its (nonzero) digits is 3780000, while the sum is 51.

The spelling of 20116765255065 in words is "twenty trillion, one hundred sixteen billion, seven hundred sixty-five million, two hundred fifty-five thousand, sixty-five".