53665412242 has 24 divisors (see below), whose sum is σ = 87180453360. Its totient is φ = 24764716080.

The previous prime is 53665412237. The next prime is 53665412257. The reversal of 53665412242 is 24221456635.

It is a happy number.

It is a super-2 number, since 2×53665412242² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53665412195 and 53665412204.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 4053109 + ... + 4066327.

It is an arithmetic number, because the mean of its divisors is an integer number (3632518890).

Almost surely, 2^53665412242 is an apocalyptic number.

53665412242 is a deficient number, since it is larger than the sum of its proper divisors (33515041118).

53665412242 is a wasteful number, since it uses less digits than its factorization.

53665412242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25258 (or 25245 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

Adding to 53665412242 its reverse (24221456635), we get a palindrome (77886868877).

The spelling of 53665412242 in words is "fifty-three billion, six hundred sixty-five million, four hundred twelve thousand, two hundred forty-two".