5144166661 has 8 divisors (see below), whose sum is σ = 5236693848. Its totient is φ = 5051904000.

The previous prime is 5144166641. The next prime is 5144166667. The reversal of 5144166661 is 1666614415.

It can be written as a sum of positive squares in 4 ways, for example, as 760932225 + 4383234436 = 27585^2 + 66206^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5144166661 is a prime.

It is a super-2 number, since 2×5144166661² = 52924901272287777842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5144166667) 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, 26680 + ... + 104881.

It is an arithmetic number, because the mean of its divisors is an integer number (654586731).

Almost surely, 2^5144166661 is an apocalyptic number.

It is an amenable number.

5144166661 is a deficient number, since it is larger than the sum of its proper divisors (92527187).

5144166661 is a wasteful number, since it uses less digits than its factorization.

5144166661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132263.

The product of its digits is 103680, while the sum is 40.

The square root of 5144166661 is about 71722.8461579712. The cubic root of 5144166661 is about 1726.2552410711.

The spelling of 5144166661 in words is "five billion, one hundred forty-four million, one hundred sixty-six thousand, six hundred sixty-one".