6651442222255 has 4 divisors (see below), whose sum is σ = 7981730666712. Its totient is φ = 5321153777800.

The previous prime is 6651442222171. The next prime is 6651442222331. The reversal of 6651442222255 is 5522222441566.

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-6651442222255 is a prime.

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, 665144222221 + ... + 665144222230.

It is an arithmetic number, because the mean of its divisors is an integer number (1995432666678).

Almost surely, 2^{6651442222255} is an apocalyptic number.

6651442222255 is a deficient number, since it is larger than the sum of its proper divisors (1330288444457).

6651442222255 is a wasteful number, since it uses less digits than its factorization.

6651442222255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330288444456.

The product of its digits is 2304000, while the sum is 46.

The spelling of 6651442222255 in words is "six trillion, six hundred fifty-one billion, four hundred forty-two million, two hundred twenty-two thousand, two hundred fifty-five".