5661871403 has 16 divisors (see below), whose sum is σ = 6320001024. Its totient is φ = 5047178880.

The previous prime is 5661871399. The next prime is 5661871421. The reversal of 5661871403 is 3041781665.

It is a cyclic number.

It is not a de Polignac number, because 5661871403 - 2² = 5661871399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661871603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89525 + ... + 139062.

It is an arithmetic number, because the mean of its divisors is an integer number (395000064).

Almost surely, 2^5661871403 is an apocalyptic number.

5661871403 is a deficient number, since it is larger than the sum of its proper divisors (658129621).

5661871403 is a wasteful number, since it uses less digits than its factorization.

5661871403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228682.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 5661871403 is about 75245.4078532371. The cubic root of 5661871403 is about 1782.3240487339.

The spelling of 5661871403 in words is "five billion, six hundred sixty-one million, eight hundred seventy-one thousand, four hundred three".