53534440789 has 2 divisors, whose sum is σ = 53534440790. Its totient is φ = 53534440788.

The previous prime is 53534440787. The next prime is 53534440847. The reversal of 53534440789 is 98704443535.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46583883889 + 6950556900 = 215833^2 + 83370^2 .

It is a cyclic number.

It is not a de Polignac number, because 53534440789 - 2¹ = 53534440787 is a prime.

Together with 53534440787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53534440783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26767220394 + 26767220395.

It is an arithmetic number, because the mean of its divisors is an integer number (26767220395).

Almost surely, 2^53534440789 is an apocalyptic number.

It is an amenable number.

53534440789 is a deficient number, since it is larger than the sum of its proper divisors (1).

53534440789 is an equidigital number, since it uses as much as digits as its factorization.

53534440789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 53534440789 in words is "fifty-three billion, five hundred thirty-four million, four hundred forty thousand, seven hundred eighty-nine".