5401665653 has 2 divisors, whose sum is σ = 5401665654. Its totient is φ = 5401665652.

The previous prime is 5401665623. The next prime is 5401665671. The reversal of 5401665653 is 3565661045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4703490724 + 698174929 = 68582^2 + 26423^2 .

It is a cyclic number.

It is not a de Polignac number, because 5401665653 - 2¹⁴ = 5401649269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5401665653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5401665623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700832826 + 2700832827.

It is an arithmetic number, because the mean of its divisors is an integer number (2700832827).

Almost surely, 2^5401665653 is an apocalyptic number.

It is an amenable number.

5401665653 is a deficient number, since it is larger than the sum of its proper divisors (1).

5401665653 is an equidigital number, since it uses as much as digits as its factorization.

5401665653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 41.

The square root of 5401665653 is about 73496.0247428390. The cubic root of 5401665653 is about 1754.5910095291.

The spelling of 5401665653 in words is "five billion, four hundred one million, six hundred sixty-five thousand, six hundred fifty-three".