2156100266203 has 16 divisors (see below), whose sum is σ = 2399928039936. Its totient is φ = 1924432002720.

The previous prime is 2156100266171. The next prime is 2156100266213. The reversal of 2156100266203 is 3026620016512.

It is not a de Polignac number, because 2156100266203 - 2⁵ = 2156100266171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156100266213) 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, 21207153 + ... + 21308578.

It is an arithmetic number, because the mean of its divisors is an integer number (149995502496).

Almost surely, 2^{2156100266203} is an apocalyptic number.

2156100266203 is a deficient number, since it is larger than the sum of its proper divisors (243827773733).

2156100266203 is a wasteful number, since it uses less digits than its factorization.

2156100266203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42515874.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 2156100266203 in words is "two trillion, one hundred fifty-six billion, one hundred million, two hundred sixty-six thousand, two hundred three".