6642848811 has 4 divisors (see below), whose sum is σ = 8857131752. Its totient is φ = 4428565872.

The previous prime is 6642848789. The next prime is 6642848833. The reversal of 6642848811 is 1188482466.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (6642848789) and next prime (6642848833).

It is not a de Polignac number, because 6642848811 - 2⁷ = 6642848683 is a prime.

It is a super-2 number, since 2×6642848811² = 88254880651608227442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6642848911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107141466 + ... + 1107141471.

It is an arithmetic number, because the mean of its divisors is an integer number (2214282938).

Almost surely, 2^6642848811 is an apocalyptic number.

6642848811 is a deficient number, since it is larger than the sum of its proper divisors (2214282941).

6642848811 is a wasteful number, since it uses less digits than its factorization.

6642848811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214282940.

The product of its digits is 589824, while the sum is 48.

The square root of 6642848811 is about 81503.6736043229. The cubic root of 6642848811 is about 1879.8280372174.

The spelling of 6642848811 in words is "six billion, six hundred forty-two million, eight hundred forty-eight thousand, eight hundred eleven".