240681068109 has 12 divisors (see below), whose sum is σ = 352412767356. Its totient is φ = 158256044352.

The previous prime is 240681068101. The next prime is 240681068161. The reversal of 240681068109 is 901860186042.

240681068109 is a `hidden beast` number, since 2 + 406 + 81 + 0 + 68 + 109 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 163964255625 + 76716812484 = 404925^2 + 276978^2 .

It is not a de Polignac number, because 240681068109 - 2³ = 240681068101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240681068101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183166062 + ... + 183167375.

It is an arithmetic number, because the mean of its divisors is an integer number (29367730613).

Almost surely, 2^240681068109 is an apocalyptic number.

It is an amenable number.

240681068109 is a deficient number, since it is larger than the sum of its proper divisors (111731699247).

240681068109 is a wasteful number, since it uses less digits than its factorization.

240681068109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366333516 (or 366333513 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 240681068109 in words is "two hundred forty billion, six hundred eighty-one million, sixty-eight thousand, one hundred nine".