20117625640670 has 32 divisors (see below), whose sum is σ = 37379205455328. Its totient is φ = 7789818411648.

The previous prime is 20117625640669. The next prime is 20117625640691. The reversal of 20117625640670 is 7604652671102.

It is a super-2 number, since 2×20117625640670² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 137927012 + ... + 138072791.

It is an arithmetic number, because the mean of its divisors is an integer number (1168100170479).

Almost surely, 2^{20117625640670} is an apocalyptic number.

20117625640670 is a deficient number, since it is larger than the sum of its proper divisors (17261579814658).

20117625640670 is a wasteful number, since it uses less digits than its factorization.

20117625640670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276000044.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 20117625640670 in words is "twenty trillion, one hundred seventeen billion, six hundred twenty-five million, six hundred forty thousand, six hundred seventy".