20117553365007 has 12 divisors (see below), whose sum is σ = 33209929364560. Its totient is φ = 11495744779968.

The previous prime is 20117553364999. The next prime is 20117553365047. The reversal of 20117553365007 is 70056335571102.

20117553365007 is a `hidden beast` number, since 2 + 0 + 1 + 17 + 553 + 36 + 50 + 0 + 7 = 666.

It is not a de Polignac number, because 20117553365007 - 2³ = 20117553364999 is a prime.

It is a super-2 number, since 2×20117553365007² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20117553365047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159663121882 + ... + 159663122007.

Almost surely, 2^{20117553365007} is an apocalyptic number.

20117553365007 is a deficient number, since it is larger than the sum of its proper divisors (13092375999553).

20117553365007 is a wasteful number, since it uses less digits than its factorization.

20117553365007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319326243902 (or 319326243899 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 45.

The spelling of 20117553365007 in words is "twenty trillion, one hundred seventeen billion, five hundred fifty-three million, three hundred sixty-five thousand, seven".