545240651605 has 24 divisors (see below), whose sum is σ = 710041029192. Its totient is φ = 401757917184.

The previous prime is 545240651597. The next prime is 545240651623. The reversal of 545240651605 is 506156042545.

It can be written as a sum of positive squares in 12 ways, for example, as 236235853681 + 309004797924 = 486041^2 + 555882^2 .

It is not a de Polignac number, because 545240651605 - 2³ = 545240651597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319804 + ... + 1092133.

It is an arithmetic number, because the mean of its divisors is an integer number (29585042883).

Almost surely, 2^545240651605 is an apocalyptic number.

It is an amenable number.

545240651605 is a deficient number, since it is larger than the sum of its proper divisors (164800377587).

545240651605 is a wasteful number, since it uses less digits than its factorization.

545240651605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412425 (or 1412412 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 545240651605 in words is "five hundred forty-five billion, two hundred forty million, six hundred fifty-one thousand, six hundred five".