5556666155 has 16 divisors (see below), whose sum is σ = 7145306784. Its totient is φ = 4133429760.

The previous prime is 5556666131. The next prime is 5556666173. The reversal of 5556666155 is 5516666555.

It is not a de Polignac number, because 5556666155 - 2¹⁴ = 5556649771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386756 + ... + 400865.

It is an arithmetic number, because the mean of its divisors is an integer number (446581674).

Almost surely, 2^5556666155 is an apocalyptic number.

5556666155 is a deficient number, since it is larger than the sum of its proper divisors (1588640629).

5556666155 is a wasteful number, since it uses less digits than its factorization.

5556666155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787726.

The product of its digits is 4050000, while the sum is 50.

The square root of 5556666155 is about 74543.0490052560. The cubic root of 5556666155 is about 1771.2156262426.

The spelling of 5556666155 in words is "five billion, five hundred fifty-six million, six hundred sixty-six thousand, one hundred fifty-five".