2156066263 has 4 divisors (see below), whose sum is σ = 2321917528. Its totient is φ = 1990215000.

The previous prime is 2156066201. The next prime is 2156066309. The reversal of 2156066263 is 3626606512.

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

It is a cyclic number.

It is not a de Polignac number, because 2156066263 - 2¹³ = 2156058071 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 (2156064263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82925613 + ... + 82925638.

It is an arithmetic number, because the mean of its divisors is an integer number (580479382).

Almost surely, 2^2156066263 is an apocalyptic number.

2156066263 is a deficient number, since it is larger than the sum of its proper divisors (165851265).

2156066263 is a wasteful number, since it uses less digits than its factorization.

2156066263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165851264.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 2156066263 is about 46433.4605968584. The cubic root of 2156066263 is about 1291.8756168458.

The spelling of 2156066263 in words is "two billion, one hundred fifty-six million, sixty-six thousand, two hundred sixty-three".