20107177050555 has 96 divisors (see below), whose sum is σ = 42075905763840. Its totient is φ = 8677299363840.

The previous prime is 20107177050487. The next prime is 20107177050619. The reversal of 20107177050555 is 55505077170102.

20107177050555 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 71 + 7 + 70 + 505 + 5 + 5 = 666.

It is not a de Polignac number, because 20107177050555 - 2⁹ = 20107177050043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20107177050555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4241926 + ... + 7629435.

It is an arithmetic number, because the mean of its divisors is an integer number (438290685040).

Almost surely, 2^{20107177050555} is an apocalyptic number.

20107177050555 is an abundant number, since it is smaller than the sum of its proper divisors (21968728713285).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20107177050555 is a wasteful number, since it uses less digits than its factorization.

20107177050555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11871681 (or 11871678 counting only the distinct ones).

The product of its (nonzero) digits is 428750, while the sum is 45.

The spelling of 20107177050555 in words is "twenty trillion, one hundred seven billion, one hundred seventy-seven million, fifty thousand, five hundred fifty-five".