53565220513 has 32 divisors (see below), whose sum is σ = 65483292672. Its totient is φ = 42815414400.

The previous prime is 53565220493. The next prime is 53565220537. The reversal of 53565220513 is 31502256535.

53565220513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53565220513 - 2⁵ = 53565220481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53565220573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16784748 + ... + 16787938.

It is an arithmetic number, because the mean of its divisors is an integer number (2046352896).

Almost surely, 2^53565220513 is an apocalyptic number.

It is an amenable number.

53565220513 is a deficient number, since it is larger than the sum of its proper divisors (11918072159).

53565220513 is a wasteful number, since it uses less digits than its factorization.

53565220513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 53565220513 in words is "fifty-three billion, five hundred sixty-five million, two hundred twenty thousand, five hundred thirteen".