2160377855 has 4 divisors (see below), whose sum is σ = 2592453432. Its totient is φ = 1728302280.

The previous prime is 2160377851. The next prime is 2160377861. The reversal of 2160377855 is 5587730612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2160377855 - 2² = 2160377851 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 (2160377851) 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 3 ways as a sum of consecutive naturals, for example, 216037781 + ... + 216037790.

It is an arithmetic number, because the mean of its divisors is an integer number (648113358).

Almost surely, 2^2160377855 is an apocalyptic number.

2160377855 is a deficient number, since it is larger than the sum of its proper divisors (432075577).

2160377855 is an equidigital number, since it uses as much as digits as its factorization.

2160377855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432075576.

The product of its (nonzero) digits is 352800, while the sum is 44.

The square root of 2160377855 is about 46479.8650492877. The cubic root of 2160377855 is about 1292.7361859132.

The spelling of 2160377855 in words is "two billion, one hundred sixty million, three hundred seventy-seven thousand, eight hundred fifty-five".