2340408684681 has 12 divisors (see below), whose sum is σ = 3411604913860. Its totient is φ = 1545958029600.

The previous prime is 2340408684661. The next prime is 2340408684697. The reversal of 2340408684681 is 1864868040432.

It is a happy number.

2340408684681 is a `hidden beast` number, since 2 + 3 + 404 + 0 + 86 + 84 + 6 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1110325838400 + 1230082846281 = 1053720^2 + 1109091^2 .

It is not a de Polignac number, because 2340408684681 - 2⁶ = 2340408684617 is a prime.

It is a super-2 number, since 2×2340408684681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2340408684611) 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, 1192867870 + ... + 1192869831.

Almost surely, 2^{2340408684681} is an apocalyptic number.

It is an amenable number.

2340408684681 is a deficient number, since it is larger than the sum of its proper divisors (1071196229179).

2340408684681 is a wasteful number, since it uses less digits than its factorization.

2340408684681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385737816 (or 2385737813 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 54.

The spelling of 2340408684681 in words is "two trillion, three hundred forty billion, four hundred eight million, six hundred eighty-four thousand, six hundred eighty-one".