53766411421 has 4 divisors (see below), whose sum is σ = 53833873212. Its totient is φ = 53698949632.

The previous prime is 53766411373. The next prime is 53766411511. The reversal of 53766411421 is 12411466735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12411466735 = 5 ⋅2482293347.

It can be written as a sum of positive squares in 2 ways, for example, as 41158265625 + 12608145796 = 202875^2 + 112286^2 .

It is a cyclic number.

It is not a de Polignac number, because 53766411421 - 2⁹ = 53766410909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53766411521) 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 in 3 ways as a sum of consecutive naturals, for example, 33729700 + ... + 33731293.

It is an arithmetic number, because the mean of its divisors is an integer number (13458468303).

Almost surely, 2^53766411421 is an apocalyptic number.

It is an amenable number.

53766411421 is a deficient number, since it is larger than the sum of its proper divisors (67461791).

53766411421 is an equidigital number, since it uses as much as digits as its factorization.

53766411421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67461790.

The product of its digits is 120960, while the sum is 40.

The spelling of 53766411421 in words is "fifty-three billion, seven hundred sixty-six million, four hundred eleven thousand, four hundred twenty-one".