20117625640635 has 8 divisors (see below), whose sum is σ = 32188201025040. Its totient is φ = 10729400341664.

The previous prime is 20117625640579. The next prime is 20117625640669. The reversal of 20117625640635 is 53604652671102.

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

It is a cyclic number.

It is not a de Polignac number, because 20117625640635 - 2¹² = 20117625636539 is a prime.

It is a super-2 number, since 2×20117625640635² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670587521340 + ... + 670587521369.

It is an arithmetic number, because the mean of its divisors is an integer number (4023525128130).

Almost surely, 2^{20117625640635} is an apocalyptic number.

20117625640635 is a deficient number, since it is larger than the sum of its proper divisors (12070575384405).

20117625640635 is a wasteful number, since it uses less digits than its factorization.

20117625640635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341175042717.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 20117625640635 in words is "twenty trillion, one hundred seventeen billion, six hundred twenty-five million, six hundred forty thousand, six hundred thirty-five".