40840655418 has 12 divisors (see below), whose sum is σ = 88488086778. Its totient is φ = 13613551800.

The previous prime is 40840655413. The next prime is 40840655431. The reversal of 40840655418 is 81455604804.

It is a happy number.

40840655418 is a `hidden beast` number, since 4 + 0 + 8 + 40 + 65 + 541 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40822990209 + 17665209 = 202047^2 + 4203^2 .

It is not an unprimeable number, because it can be changed into a prime (40840655413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1134462633 + ... + 1134462668.

Almost surely, 2^40840655418 is an apocalyptic number.

40840655418 is an abundant number, since it is smaller than the sum of its proper divisors (47647431360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40840655418 is a wasteful number, since it uses less digits than its factorization.

40840655418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268925309 (or 2268925306 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 40840655418 in words is "forty billion, eight hundred forty million, six hundred fifty-five thousand, four hundred eighteen".