5645101741661 has 4 divisors (see below), whose sum is σ = 5977166550012. Its totient is φ = 5313036933312.

The previous prime is 5645101741633. The next prime is 5645101741667. The reversal of 5645101741661 is 1661471015465.

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 5085588765625 + 559512976036 = 2255125^2 + 748006^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645101741661 - 2¹⁰ = 5645101740637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645101741667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166032404150 + ... + 166032404183.

It is an arithmetic number, because the mean of its divisors is an integer number (1494291637503).

Almost surely, 2^{5645101741661} is an apocalyptic number.

It is an amenable number.

5645101741661 is a deficient number, since it is larger than the sum of its proper divisors (332064808351).

5645101741661 is a wasteful number, since it uses less digits than its factorization.

5645101741661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332064808350.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 5645101741661 in words is "five trillion, six hundred forty-five billion, one hundred one million, seven hundred forty-one thousand, six hundred sixty-one".