2155726466 has 8 divisors (see below), whose sum is σ = 3250520064. Its totient is φ = 1072219780.

The previous prime is 2155726459. The next prime is 2155726477. The reversal of 2155726466 is 6646275512.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2821250 + ... + 2822013.

It is an arithmetic number, because the mean of its divisors is an integer number (406315008).

Almost surely, 2^2155726466 is an apocalyptic number.

2155726466 is a deficient number, since it is larger than the sum of its proper divisors (1094793598).

2155726466 is a wasteful number, since it uses less digits than its factorization.

2155726466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643456.

The product of its digits is 604800, while the sum is 44.

The square root of 2155726466 is about 46429.8014856837. The cubic root of 2155726466 is about 1291.8077465567.

The spelling of 2155726466 in words is "two billion, one hundred fifty-five million, seven hundred twenty-six thousand, four hundred sixty-six".