53306721536 has 36 divisors (see below), whose sum is σ = 106428371700. Its totient is φ = 26647560192.

The previous prime is 53306721529. The next prime is 53306721569. The reversal of 53306721536 is 63512760335.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16651321600 + 36655399936 = 129040^2 + 191456^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 53306721493 and 53306721502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308320 + ... + 1348448.

Almost surely, 2^53306721536 is an apocalyptic number.

It is an amenable number.

53306721536 is a deficient number, since it is larger than the sum of its proper divisors (53121650164).

53306721536 is an equidigital number, since it uses as much as digits as its factorization.

53306721536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45334 (or 45320 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 41.

The spelling of 53306721536 in words is "fifty-three billion, three hundred six million, seven hundred twenty-one thousand, five hundred thirty-six".