53220218528 has 24 divisors (see below), whose sum is σ = 104847578388. Its totient is φ = 26592262144.

The previous prime is 53220218509. The next prime is 53220218537. The reversal of 53220218528 is 82581202235.

It can be written as a sum of positive squares in 2 ways, for example, as 53170825744 + 49392784 = 230588^2 + 7028^2 .

It is a super-3 number, since 3×53220218528³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53220218491 and 53220218500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509201 + ... + 604752.

Almost surely, 2^53220218528 is an apocalyptic number.

It is an amenable number.

53220218528 is a deficient number, since it is larger than the sum of its proper divisors (51627359860).

53220218528 is a wasteful number, since it uses less digits than its factorization.

53220218528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115456 (or 1115448 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The spelling of 53220218528 in words is "fifty-three billion, two hundred twenty million, two hundred eighteen thousand, five hundred twenty-eight".