3618874647555 has 64 divisors (see below), whose sum is σ = 5896316878848. Its totient is φ = 1895027097600.

The previous prime is 3618874647541. The next prime is 3618874647599. The reversal of 3618874647555 is 5557464788163.

It is a Cunningham number, because it is equal to 1902334²-1.

It is not a de Polignac number, because 3618874647555 - 2¹⁰ = 3618874646531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3618874647555.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 724787139 + ... + 724792131.

It is an arithmetic number, because the mean of its divisors is an integer number (92129951232).

Almost surely, 2^{3618874647555} is an apocalyptic number.

3618874647555 is a deficient number, since it is larger than the sum of its proper divisors (2277442231293).

3618874647555 is a wasteful number, since it uses less digits than its factorization.

3618874647555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8996.

The product of its digits is 677376000, while the sum is 69.

The spelling of 3618874647555 in words is "three trillion, six hundred eighteen billion, eight hundred seventy-four million, six hundred forty-seven thousand, five hundred fifty-five".