539645451609 has 32 divisors (see below), whose sum is σ = 799840137600. Its totient is φ = 320850383360.

The previous prime is 539645451599. The next prime is 539645451617. The reversal of 539645451609 is 906154546935.

It is a cyclic number.

It is not a de Polignac number, because 539645451609 - 2¹¹ = 539645449561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (539645451209) 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, 29529727 + ... + 29547995.

It is an arithmetic number, because the mean of its divisors is an integer number (24995004300).

Almost surely, 2^539645451609 is an apocalyptic number.

It is an amenable number.

539645451609 is a deficient number, since it is larger than the sum of its proper divisors (260194685991).

539645451609 is a wasteful number, since it uses less digits than its factorization.

539645451609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35225.

The product of its (nonzero) digits is 17496000, while the sum is 57.

The spelling of 539645451609 in words is "five hundred thirty-nine billion, six hundred forty-five million, four hundred fifty-one thousand, six hundred nine".