53345512861 has 2 divisors, whose sum is σ = 53345512862. Its totient is φ = 53345512860.

The previous prime is 53345512859. The next prime is 53345512879. The reversal of 53345512861 is 16821554335.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48679803225 + 4665709636 = 220635^2 + 68306^2 .

It is a cyclic number.

It is not a de Polignac number, because 53345512861 - 2¹ = 53345512859 is a prime.

Together with 53345512859, 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 (53345512841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26672756430 + 26672756431.

It is an arithmetic number, because the mean of its divisors is an integer number (26672756431).

Almost surely, 2^53345512861 is an apocalyptic number.

It is an amenable number.

53345512861 is a deficient number, since it is larger than the sum of its proper divisors (1).

53345512861 is an equidigital number, since it uses as much as digits as its factorization.

53345512861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 43.

The spelling of 53345512861 in words is "fifty-three billion, three hundred forty-five million, five hundred twelve thousand, eight hundred sixty-one".