111640044553 has 2 divisors, whose sum is σ = 111640044554. Its totient is φ = 111640044552.

The previous prime is 111640044533. The next prime is 111640044569. The reversal of 111640044553 is 355440046111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110574870784 + 1065173769 = 332528^2 + 32637^2 .

It is an emirp because it is prime and its reverse (355440046111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111640044553 is a prime.

It is not a weakly prime, because it can be changed into another prime (111640044533) 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, 55820022276 + 55820022277.

It is an arithmetic number, because the mean of its divisors is an integer number (55820022277).

Almost surely, 2^111640044553 is an apocalyptic number.

It is an amenable number.

111640044553 is a deficient number, since it is larger than the sum of its proper divisors (1).

111640044553 is an equidigital number, since it uses as much as digits as its factorization.

111640044553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 111640044553 in words is "one hundred eleven billion, six hundred forty million, forty-four thousand, five hundred fifty-three".