40881128529 has 4 divisors (see below), whose sum is σ = 54508171376. Its totient is φ = 27254085684.

The previous prime is 40881128521. The next prime is 40881128569. The reversal of 40881128529 is 92582118804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40881128529 - 2³ = 40881128521 is a prime.

It is a super-3 number, since 3×40881128529³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40881128521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6813521419 + ... + 6813521424.

It is an arithmetic number, because the mean of its divisors is an integer number (13627042844).

Almost surely, 2^40881128529 is an apocalyptic number.

It is an amenable number.

40881128529 is a deficient number, since it is larger than the sum of its proper divisors (13627042847).

40881128529 is a wasteful number, since it uses less digits than its factorization.

40881128529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13627042846.

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 40881128529 in words is "forty billion, eight hundred eighty-one million, one hundred twenty-eight thousand, five hundred twenty-nine".