54664835209 has 2 divisors, whose sum is σ = 54664835210. Its totient is φ = 54664835208.

The previous prime is 54664835201. The next prime is 54664835249. The reversal of 54664835209 is 90253846645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53394269184 + 1270566025 = 231072^2 + 35645^2 .

It is a cyclic number.

It is not a de Polignac number, because 54664835209 - 2³ = 54664835201 is a prime.

It is not a weakly prime, because it can be changed into another prime (54664835201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27332417604 + 27332417605.

It is an arithmetic number, because the mean of its divisors is an integer number (27332417605).

Almost surely, 2^54664835209 is an apocalyptic number.

It is an amenable number.

54664835209 is a deficient number, since it is larger than the sum of its proper divisors (1).

54664835209 is an equidigital number, since it uses as much as digits as its factorization.

54664835209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 54664835209 in words is "fifty-four billion, six hundred sixty-four million, eight hundred thirty-five thousand, two hundred nine".