20117700124646 has 8 divisors (see below), whose sum is σ = 30177012101760. Its totient is φ = 10058696090728.

The previous prime is 20117700124589. The next prime is 20117700124663. The reversal of 20117700124646 is 64642100771102.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76822406 + ... + 77083833.

It is an arithmetic number, because the mean of its divisors is an integer number (3772126512720).

Almost surely, 2^{20117700124646} is an apocalyptic number.

20117700124646 is a deficient number, since it is larger than the sum of its proper divisors (10059311977114).

20117700124646 is a wasteful number, since it uses less digits than its factorization.

20117700124646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153971598.

The product of its (nonzero) digits is 112896, while the sum is 41.

Adding to 20117700124646 its reverse (64642100771102), we get a palindrome (84759800895748).

The spelling of 20117700124646 in words is "twenty trillion, one hundred seventeen billion, seven hundred million, one hundred twenty-four thousand, six hundred forty-six".