20117105576644 has 96 divisors (see below), whose sum is σ = 36757307768832. Its totient is φ = 9627556848000.

The previous prime is 20117105576569. The next prime is 20117105576647. The reversal of 20117105576644 is 44667550171102.

It is a super-2 number, since 2×20117105576644² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20117105576647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1467216949 + ... + 1467230659.

It is an arithmetic number, because the mean of its divisors is an integer number (382888622592).

Almost surely, 2^{20117105576644} is an apocalyptic number.

It is an amenable number.

20117105576644 is a deficient number, since it is larger than the sum of its proper divisors (16640202192188).

20117105576644 is a wasteful number, since it uses less digits than its factorization.

20117105576644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14857 (or 14855 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 20117105576644 in words is "twenty trillion, one hundred seventeen billion, one hundred five million, five hundred seventy-six thousand, six hundred forty-four".