6555201021793 has 2 divisors, whose sum is σ = 6555201021794. Its totient is φ = 6555201021792.

The previous prime is 6555201021671. The next prime is 6555201021833. The reversal of 6555201021793 is 3971201025556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5774351328144 + 780849693649 = 2402988^2 + 883657^2 .

It is a cyclic number.

It is not a de Polignac number, because 6555201021793 - 2³³ = 6546611087201 is a prime.

It is a super-2 number, since 2×6555201021793² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6555201021493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277600510896 + 3277600510897.

It is an arithmetic number, because the mean of its divisors is an integer number (3277600510897).

Almost surely, 2^{6555201021793} is an apocalyptic number.

It is an amenable number.

6555201021793 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555201021793 is an equidigital number, since it uses as much as digits as its factorization.

6555201021793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 46.

The spelling of 6555201021793 in words is "six trillion, five hundred fifty-five billion, two hundred one million, twenty-one thousand, seven hundred ninety-three".