253445184691 has 2 divisors, whose sum is σ = 253445184692. Its totient is φ = 253445184690.

The previous prime is 253445184667. The next prime is 253445184703. The reversal of 253445184691 is 196481544352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253445184691 - 2²⁵ = 253411630259 is a prime.

It is not a weakly prime, because it can be changed into another prime (253445187691) 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, 126722592345 + 126722592346.

It is an arithmetic number, because the mean of its divisors is an integer number (126722592346).

Almost surely, 2^253445184691 is an apocalyptic number.

253445184691 is a deficient number, since it is larger than the sum of its proper divisors (1).

253445184691 is an equidigital number, since it uses as much as digits as its factorization.

253445184691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4147200, while the sum is 52.

The spelling of 253445184691 in words is "two hundred fifty-three billion, four hundred forty-five million, one hundred eighty-four thousand, six hundred ninety-one".