3550878445665 has 16 divisors (see below), whose sum is σ = 5777700523200. Its totient is φ = 1861703500992.

The previous prime is 3550878445663. The next prime is 3550878445703. The reversal of 3550878445665 is 5665448780553.

It is not a de Polignac number, because 3550878445665 - 2¹ = 3550878445663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3550878445596 and 3550878445605.

It is not an unprimeable number, because it can be changed into a prime (3550878445663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2006145130 + ... + 2006146899.

It is an arithmetic number, because the mean of its divisors is an integer number (361106282700).

Almost surely, 2^{3550878445665} is an apocalyptic number.

It is an amenable number.

3550878445665 is a deficient number, since it is larger than the sum of its proper divisors (2226822077535).

3550878445665 is a wasteful number, since it uses less digits than its factorization.

3550878445665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012292096.

The product of its (nonzero) digits is 483840000, while the sum is 66.

The spelling of 3550878445665 in words is "three trillion, five hundred fifty billion, eight hundred seventy-eight million, four hundred forty-five thousand, six hundred sixty-five".