545044166661 has 8 divisors (see below), whose sum is σ = 726738605824. Its totient is φ = 363356252640.

The previous prime is 545044166647. The next prime is 545044166663. The reversal of 545044166661 is 166661440545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 545044166661 - 2⁷ = 545044166533 is a prime.

It is a super-2 number, since 2×545044166661² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545044166661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545044166663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432936 + ... + 1772961.

It is an arithmetic number, because the mean of its divisors is an integer number (90842325728).

Almost surely, 2^545044166661 is an apocalyptic number.

It is an amenable number.

545044166661 is a deficient number, since it is larger than the sum of its proper divisors (181694439163).

545044166661 is a wasteful number, since it uses less digits than its factorization.

545044166661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262571.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 545044166661 in words is "five hundred forty-five billion, forty-four million, one hundred sixty-six thousand, six hundred sixty-one".