2065418081281 has 16 divisors (see below), whose sum is σ = 2141569342080. Its totient is φ = 1990845642240.

The previous prime is 2065418081269. The next prime is 2065418081329. The reversal of 2065418081281 is 1821808145602.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2065418081281 - 2²¹ = 2065415984129 is a prime.

It is a super-2 number, since 2×2065418081281² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2065488081281) 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, 95185 + ... + 2034673.

It is an arithmetic number, because the mean of its divisors is an integer number (133848083880).

Almost surely, 2^{2065418081281} is an apocalyptic number.

It is an amenable number.

2065418081281 is a deficient number, since it is larger than the sum of its proper divisors (76151260799).

2065418081281 is a wasteful number, since it uses less digits than its factorization.

2065418081281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939896.

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 2065418081281 in words is "two trillion, sixty-five billion, four hundred eighteen million, eighty-one thousand, two hundred eighty-one".