20318775060105 has 24 divisors (see below), whose sum is σ = 35701665042888. Its totient is φ = 10688232358656.

The previous prime is 20318775060071. The next prime is 20318775060109. The reversal of 20318775060105 is 50106057781302.

It is a happy number.

20318775060105 is a `hidden beast` number, since 2 + 0 + 31 + 8 + 7 + 7 + 5 + 0 + 601 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4642663139856 + 15676111920249 = 2154684^2 + 3959307^2 .

It is not a de Polignac number, because 20318775060105 - 2¹⁵ = 20318775027337 is a prime.

It is a super-2 number, since 2×20318775060105² (a number of 27 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (20318775060109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3092656542 + ... + 3092663111.

It is an arithmetic number, because the mean of its divisors is an integer number (1487569376787).

Almost surely, 2^{20318775060105} is an apocalyptic number.

It is an amenable number.

20318775060105 is a deficient number, since it is larger than the sum of its proper divisors (15382889982783).

20318775060105 is a wasteful number, since it uses less digits than its factorization.

20318775060105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6185319737 (or 6185319734 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 20318775060105 in words is "twenty trillion, three hundred eighteen billion, seven hundred seventy-five million, sixty thousand, one hundred five".