40813539081 has 12 divisors (see below), whose sum is σ = 63302632272. Its totient is φ = 23322022248.

The previous prime is 40813539073. The next prime is 40813539223. The reversal of 40813539081 is 18093531804.

It is not a de Polignac number, because 40813539081 - 2³ = 40813539073 is a prime.

It is a super-3 number, since 3×40813539081³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (40813539001) 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, 138821415 + ... + 138821708.

It is an arithmetic number, because the mean of its divisors is an integer number (5275219356).

Almost surely, 2^40813539081 is an apocalyptic number.

It is an amenable number.

40813539081 is a deficient number, since it is larger than the sum of its proper divisors (22489093191).

40813539081 is a wasteful number, since it uses less digits than its factorization.

40813539081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277643140 (or 277643133 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 40813539081 in words is "forty billion, eight hundred thirteen million, five hundred thirty-nine thousand, eighty-one".