6605143402655 has 64 divisors (see below), whose sum is σ = 9673866132480. Its totient is φ = 4226197248000.

The previous prime is 6605143402483. The next prime is 6605143402673. The reversal of 6605143402655 is 5562043415066.

It is a de Polignac number, because none of the positive numbers 2^k-6605143402655 is a prime.

It is a super-4 number, since 4×6605143402655⁴ (a number of 52 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 81879881 + ... + 81960509.

It is an arithmetic number, because the mean of its divisors is an integer number (151154158320).

Almost surely, 2^{6605143402655} is an apocalyptic number.

6605143402655 is a deficient number, since it is larger than the sum of its proper divisors (3068722729825).

6605143402655 is a wasteful number, since it uses less digits than its factorization.

6605143402655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81840.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 6605143402655 in words is "six trillion, six hundred five billion, one hundred forty-three million, four hundred two thousand, six hundred fifty-five".