20116112635501 has 4 divisors (see below), whose sum is σ = 20118682079100. Its totient is φ = 20113543191904.

The previous prime is 20116112635483. The next prime is 20116112635519. The reversal of 20116112635501 is 10553621161102.

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

It is an interprime number because it is at equal distance from previous prime (20116112635483) and next prime (20116112635519).

It can be written as a sum of positive squares in 2 ways, for example, as 5591210201476 + 14524902434025 = 2364574^2 + 3811155^2 .

It is a cyclic number.

It is not a de Polignac number, because 20116112635501 - 2⁵ = 20116112635469 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 (20116112635601) 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, 1284710056 + ... + 1284725713.

It is an arithmetic number, because the mean of its divisors is an integer number (5029670519775).

Almost surely, 2^{20116112635501} is an apocalyptic number.

It is an amenable number.

20116112635501 is a deficient number, since it is larger than the sum of its proper divisors (2569443599).

20116112635501 is an equidigital number, since it uses as much as digits as its factorization.

20116112635501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569443598.

The product of its (nonzero) digits is 10800, while the sum is 34.

Adding to 20116112635501 its reverse (10553621161102), we get a palindrome (30669733796603).

The spelling of 20116112635501 in words is "twenty trillion, one hundred sixteen billion, one hundred twelve million, six hundred thirty-five thousand, five hundred one".