53443051111 has 2 divisors, whose sum is σ = 53443051112. Its totient is φ = 53443051110.

The previous prime is 53443051087. The next prime is 53443051163. The reversal of 53443051111 is 11115034435.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53443051111 - 2¹⁷ = 53442920039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53443051111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53443051511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26721525555 + 26721525556.

It is an arithmetic number, because the mean of its divisors is an integer number (26721525556).

Almost surely, 2^53443051111 is an apocalyptic number.

53443051111 is a deficient number, since it is larger than the sum of its proper divisors (1).

53443051111 is an equidigital number, since it uses as much as digits as its factorization.

53443051111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 53443051111 its reverse (11115034435), we get a palindrome (64558085546).

The spelling of 53443051111 in words is "fifty-three billion, four hundred forty-three million, fifty-one thousand, one hundred eleven".