5467781661 has 16 divisors (see below), whose sum is σ = 7377713280. Its totient is φ = 3601579520.

The previous prime is 5467781633. The next prime is 5467781717. The reversal of 5467781661 is 1661877645.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5467781661 - 2⁹ = 5467781149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5467781611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396661 + ... + 410213.

It is an arithmetic number, because the mean of its divisors is an integer number (461107080).

Almost surely, 2^5467781661 is an apocalyptic number.

It is an amenable number.

5467781661 is a deficient number, since it is larger than the sum of its proper divisors (1909931619).

5467781661 is a wasteful number, since it uses less digits than its factorization.

5467781661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15156.

The product of its digits is 1693440, while the sum is 51.

The square root of 5467781661 is about 73944.4498322896. The cubic root of 5467781661 is about 1761.7206894615.

The spelling of 5467781661 in words is "five billion, four hundred sixty-seven million, seven hundred eighty-one thousand, six hundred sixty-one".