545421500465 has 4 divisors (see below), whose sum is σ = 654505800564. Its totient is φ = 436337200368.

The previous prime is 545421500423. The next prime is 545421500483. The reversal of 545421500465 is 564005124545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 282982505521 + 262438994944 = 531961^2 + 512288^2 .

It is a cyclic number.

It is not a de Polignac number, because 545421500465 - 2²⁶ = 545354391601 is a prime.

It is a super-2 number, since 2×545421500465² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54542150042 + ... + 54542150051.

It is an arithmetic number, because the mean of its divisors is an integer number (163626450141).

Almost surely, 2^545421500465 is an apocalyptic number.

It is an amenable number.

545421500465 is a deficient number, since it is larger than the sum of its proper divisors (109084300099).

545421500465 is a wasteful number, since it uses less digits than its factorization.

545421500465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109084300098.

The product of its (nonzero) digits is 480000, while the sum is 41.

The spelling of 545421500465 in words is "five hundred forty-five billion, four hundred twenty-one million, five hundred thousand, four hundred sixty-five".