53133818521 has 8 divisors (see below), whose sum is σ = 60948441344. Its totient is φ = 45375215040.

The previous prime is 53133818509. The next prime is 53133818539. The reversal of 53133818521 is 12581833135.

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

It is a cyclic number.

It is not a de Polignac number, because 53133818521 - 2¹¹ = 53133816473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53133818321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14002800 + ... + 14006593.

It is an arithmetic number, because the mean of its divisors is an integer number (7618555168).

Almost surely, 2^53133818521 is an apocalyptic number.

It is an amenable number.

53133818521 is a deficient number, since it is larger than the sum of its proper divisors (7814622823).

53133818521 is a wasteful number, since it uses less digits than its factorization.

53133818521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28009671.

The product of its digits is 86400, while the sum is 40.

The spelling of 53133818521 in words is "fifty-three billion, one hundred thirty-three million, eight hundred eighteen thousand, five hundred twenty-one".