6652048561821 has 12 divisors (see below), whose sum is σ = 10347631096348. Its totient is φ = 4093568345664.

The previous prime is 6652048561811. The next prime is 6652048561841. The reversal of 6652048561821 is 1281658402566.

6652048561821 is a `hidden beast` number, since 6 + 6 + 5 + 20 + 485 + 61 + 82 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4345811484921 + 2306237076900 = 2084661^2 + 1518630^2 .

It is not a de Polignac number, because 6652048561821 - 2¹⁵ = 6652048529053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6652048561811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28427557840 + ... + 28427558073.

Almost surely, 2^{6652048561821} is an apocalyptic number.

It is an amenable number.

6652048561821 is a deficient number, since it is larger than the sum of its proper divisors (3695582534527).

6652048561821 is a wasteful number, since it uses less digits than its factorization.

6652048561821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56855115932 (or 56855115929 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 6652048561821 in words is "six trillion, six hundred fifty-two billion, forty-eight million, five hundred sixty-one thousand, eight hundred twenty-one".