53506666238 has 8 divisors (see below), whose sum is σ = 80260980888. Its totient is φ = 26753005944.

The previous prime is 53506666237. The next prime is 53506666249. The reversal of 53506666238 is 83266660535.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×53506666238³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53506666231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238445 + ... + 404807.

It is an arithmetic number, because the mean of its divisors is an integer number (10032622611).

Almost surely, 2^53506666238 is an apocalyptic number.

53506666238 is a deficient number, since it is larger than the sum of its proper divisors (26754314650).

53506666238 is a wasteful number, since it uses less digits than its factorization.

53506666238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327178.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 53506666238 in words is "fifty-three billion, five hundred six million, six hundred sixty-six thousand, two hundred thirty-eight".