6448861033 has 4 divisors (see below), whose sum is σ = 6449335380. Its totient is φ = 6448386688.

The previous prime is 6448861007. The next prime is 6448861093. The reversal of 6448861033 is 3301688446.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2322468864 + 4126392169 = 48192^2 + 64237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6448861033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6448861093) 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, 216160 + ... + 244177.

It is an arithmetic number, because the mean of its divisors is an integer number (1612333845).

Almost surely, 2^6448861033 is an apocalyptic number.

It is an amenable number.

6448861033 is a deficient number, since it is larger than the sum of its proper divisors (474347).

6448861033 is a wasteful number, since it uses less digits than its factorization.

6448861033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474346.

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 6448861033 is about 80304.8008091671. The cubic root of 6448861033 is about 1861.3484106957.

It can be divided in two parts, 64488 and 61033, that added together give a palindrome (125521).

The spelling of 6448861033 in words is "six billion, four hundred forty-eight million, eight hundred sixty-one thousand, thirty-three".