545319774721 has 4 divisors (see below), whose sum is σ = 545348376000. Its totient is φ = 545291173444.

The previous prime is 545319774707. The next prime is 545319774739. The reversal of 545319774721 is 127477913545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 127477913545 = 5 ⋅25495582709.

It is a cyclic number.

It is not a de Polignac number, because 545319774721 - 2³¹ = 543172291073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545319774781) by changing a digit.

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, 14272021 + ... + 14310178.

It is an arithmetic number, because the mean of its divisors is an integer number (136337094000).

Almost surely, 2^545319774721 is an apocalyptic number.

It is an amenable number.

545319774721 is a deficient number, since it is larger than the sum of its proper divisors (28601279).

545319774721 is a wasteful number, since it uses less digits than its factorization.

545319774721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28601278.

The product of its digits is 7408800, while the sum is 55.

The spelling of 545319774721 in words is "five hundred forty-five billion, three hundred nineteen million, seven hundred seventy-four thousand, seven hundred twenty-one".