53645619809 has 8 divisors (see below), whose sum is σ = 53800047360. Its totient is φ = 53491260816.

The previous prime is 53645619793. The next prime is 53645619823. The reversal of 53645619809 is 90891654635.

53645619809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53645619809 - 2⁴ = 53645619793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53645619889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1833872 + ... + 1862894.

It is an arithmetic number, because the mean of its divisors is an integer number (6725005920).

Almost surely, 2^53645619809 is an apocalyptic number.

It is an amenable number.

53645619809 is a deficient number, since it is larger than the sum of its proper divisors (154427551).

53645619809 is a wasteful number, since it uses less digits than its factorization.

53645619809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34279.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 53645619809 in words is "fifty-three billion, six hundred forty-five million, six hundred nineteen thousand, eight hundred nine".