40918481409 has 16 divisors (see below), whose sum is σ = 59217385472. Its totient is φ = 24982328448.

The previous prime is 40918481297. The next prime is 40918481431. The reversal of 40918481409 is 90418481904.

It is not a de Polignac number, because 40918481409 - 2⁷ = 40918481281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40918481209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4125724 + ... + 4135629.

It is an arithmetic number, because the mean of its divisors is an integer number (3701086592).

Almost surely, 2^40918481409 is an apocalyptic number.

It is an amenable number.

40918481409 is a deficient number, since it is larger than the sum of its proper divisors (18298904063).

40918481409 is a wasteful number, since it uses less digits than its factorization.

40918481409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8261496.

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 40918481409 in words is "forty billion, nine hundred eighteen million, four hundred eighty-one thousand, four hundred nine".