6552167801021 has 2 divisors, whose sum is σ = 6552167801022. Its totient is φ = 6552167801020.

The previous prime is 6552167801017. The next prime is 6552167801033. The reversal of 6552167801021 is 1201087612556.

6552167801021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6402220728121 + 149947072900 = 2530261^2 + 387230^2 .

It is a cyclic number.

It is not a de Polignac number, because 6552167801021 - 2² = 6552167801017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6552167801041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3276083900510 + 3276083900511.

It is an arithmetic number, because the mean of its divisors is an integer number (3276083900511).

Almost surely, 2^{6552167801021} is an apocalyptic number.

It is an amenable number.

6552167801021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6552167801021 is an equidigital number, since it uses as much as digits as its factorization.

6552167801021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 6552167801021 in words is "six trillion, five hundred fifty-two billion, one hundred sixty-seven million, eight hundred one thousand, twenty-one".