53649109221 has 16 divisors (see below), whose sum is σ = 71837756928. Its totient is φ = 35613350000.

The previous prime is 53649109211. The next prime is 53649109249. The reversal of 53649109221 is 12290194635.

It is a cyclic number.

It is not a de Polignac number, because 53649109221 - 2²³ = 53640720613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53649109211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3343600 + ... + 3359606.

It is an arithmetic number, because the mean of its divisors is an integer number (4489859808).

Almost surely, 2^53649109221 is an apocalyptic number.

It is an amenable number.

53649109221 is a deficient number, since it is larger than the sum of its proper divisors (18188647707).

53649109221 is a wasteful number, since it uses less digits than its factorization.

53649109221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20712.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 53649109221 in words is "fifty-three billion, six hundred forty-nine million, one hundred nine thousand, two hundred twenty-one".