2156656226 has 16 divisors (see below), whose sum is σ = 3378193344. Its totient is φ = 1030662864.

The previous prime is 2156656223. The next prime is 2156656283. The reversal of 2156656226 is 6226566512.

It is a super-3 number, since 3×2156656226³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2156656223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46085 + ... + 80231.

It is an arithmetic number, because the mean of its divisors is an integer number (211137084).

Almost surely, 2^2156656226 is an apocalyptic number.

2156656226 is a deficient number, since it is larger than the sum of its proper divisors (1221537118).

2156656226 is a wasteful number, since it uses less digits than its factorization.

2156656226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35545.

The product of its digits is 259200, while the sum is 41.

The square root of 2156656226 is about 46439.8129410531. The cubic root of 2156656226 is about 1291.9934377932.

The spelling of 2156656226 in words is "two billion, one hundred fifty-six million, six hundred fifty-six thousand, two hundred twenty-six".