20117625640633 has 16 divisors (see below), whose sum is σ = 21166221202560. Its totient is φ = 19095644937600.

The previous prime is 20117625640579. The next prime is 20117625640669. The reversal of 20117625640633 is 33604652671102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20117625640633 - 2¹³ = 20117625632441 is a prime.

It is a super-2 number, since 2×20117625640633² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117625640733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35261838 + ... + 35827816.

It is an arithmetic number, because the mean of its divisors is an integer number (1322888825160).

Almost surely, 2^{20117625640633} is an apocalyptic number.

It is an amenable number.

20117625640633 is a deficient number, since it is larger than the sum of its proper divisors (1048595561927).

20117625640633 is a wasteful number, since it uses less digits than its factorization.

20117625640633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589488.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 20117625640633 in words is "twenty trillion, one hundred seventeen billion, six hundred twenty-five million, six hundred forty thousand, six hundred thirty-three".