6888449350655 has 4 divisors (see below), whose sum is σ = 8266139220792. Its totient is φ = 5510759480520.

The previous prime is 6888449350649. The next prime is 6888449350667. The reversal of 6888449350655 is 5560539448886.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-6888449350655 is a prime.

It is a super-2 number, since 2×6888449350655² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688844935061 + ... + 688844935070.

It is an arithmetic number, because the mean of its divisors is an integer number (2066534805198).

Almost surely, 2^{6888449350655} is an apocalyptic number.

6888449350655 is a deficient number, since it is larger than the sum of its proper divisors (1377689870137).

6888449350655 is a wasteful number, since it uses less digits than its factorization.

6888449350655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377689870136.

The product of its (nonzero) digits is 995328000, while the sum is 71.

The spelling of 6888449350655 in words is "six trillion, eight hundred eighty-eight billion, four hundred forty-nine million, three hundred fifty thousand, six hundred fifty-five".