2026543665 has 16 divisors (see below), whose sum is σ = 3243816576. Its totient is φ = 1080374400.

The previous prime is 2026543663. The next prime is 2026543681. The reversal of 2026543665 is 5663456202.

It is not a de Polignac number, because 2026543665 - 2¹ = 2026543663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2026543661) 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, 11020 + ... + 64610.

It is an arithmetic number, because the mean of its divisors is an integer number (202738536).

Almost surely, 2^2026543665 is an apocalyptic number.

It is an amenable number.

2026543665 is a deficient number, since it is larger than the sum of its proper divisors (1217272911).

2026543665 is a wasteful number, since it uses less digits than its factorization.

2026543665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56120.

The product of its (nonzero) digits is 259200, while the sum is 39.

The square root of 2026543665 is about 45017.1485658521. The cubic root of 2026543665 is about 1265.4703922221.

Adding to 2026543665 its reverse (5663456202), we get a palindrome (7689999867).

The spelling of 2026543665 in words is "two billion, twenty-six million, five hundred forty-three thousand, six hundred sixty-five".