3618551868138 has 24 divisors (see below), whose sum is σ = 7841329451748. Its totient is φ = 1206009534912.

The previous prime is 3618551868101. The next prime is 3618551868179. The reversal of 3618551868138 is 8318681558163.

3618551868138 is a `hidden beast` number, since 3 + 6 + 1 + 8 + 5 + 518 + 6 + 81 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3401910958329 + 216640909809 = 1844427^2 + 465447^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14407131 + ... + 14656142.

Almost surely, 2^{3618551868138} is an apocalyptic number.

3618551868138 is an abundant number, since it is smaller than the sum of its proper divisors (4222777583610).

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

3618551868138 is a wasteful number, since it uses less digits than its factorization.

3618551868138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29070198 (or 29070195 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 63.

The spelling of 3618551868138 in words is "three trillion, six hundred eighteen billion, five hundred fifty-one million, eight hundred sixty-eight thousand, one hundred thirty-eight".