253453215109 has 2 divisors, whose sum is σ = 253453215110. Its totient is φ = 253453215108.

The previous prime is 253453215011. The next prime is 253453215121. The reversal of 253453215109 is 901512354352.

253453215109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247192924225 + 6260290884 = 497185^2 + 79122^2 .

It is a cyclic number.

It is not a de Polignac number, because 253453215109 - 2²⁵ = 253419660677 is a prime.

It is a super-3 number, since 3×253453215109³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253453215149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126726607554 + 126726607555.

It is an arithmetic number, because the mean of its divisors is an integer number (126726607555).

Almost surely, 2^253453215109 is an apocalyptic number.

It is an amenable number.

253453215109 is a deficient number, since it is larger than the sum of its proper divisors (1).

253453215109 is an equidigital number, since it uses as much as digits as its factorization.

253453215109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 253453215109 in words is "two hundred fifty-three billion, four hundred fifty-three million, two hundred fifteen thousand, one hundred nine".