2156263133 has 16 divisors (see below), whose sum is σ = 2303976960. Its totient is φ = 2013280896.

The previous prime is 2156263121. The next prime is 2156263141. The reversal of 2156263133 is 3313626512.

2156263133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2156263133 - 2⁶ = 2156263069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2156263133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156263633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439691 + ... + 444567.

It is an arithmetic number, because the mean of its divisors is an integer number (143998560).

Almost surely, 2^2156263133 is an apocalyptic number.

2156263133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2156263133 is a deficient number, since it is larger than the sum of its proper divisors (147713827).

2156263133 is a wasteful number, since it uses less digits than its factorization.

2156263133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356.

The product of its digits is 19440, while the sum is 32.

The square root of 2156263133 is about 46435.5804636918. The cubic root of 2156263133 is about 1291.9149359547.

Adding to 2156263133 its reverse (3313626512), we get a palindrome (5469889645).

The spelling of 2156263133 in words is "two billion, one hundred fifty-six million, two hundred sixty-three thousand, one hundred thirty-three".