40440918159 has 12 divisors (see below), whose sum is σ = 58416881952. Its totient is φ = 26959586400.

The previous prime is 40440918139. The next prime is 40440918173. The reversal of 40440918159 is 95181904404.

It is a happy number.

40440918159 is a `hidden beast` number, since 40 + 440 + 9 + 18 + 159 = 666.

It is not a de Polignac number, because 40440918159 - 2⁵ = 40440918127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440918139) 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, 222714 + ... + 361224.

It is an arithmetic number, because the mean of its divisors is an integer number (4868073496).

Almost surely, 2^40440918159 is an apocalyptic number.

40440918159 is a deficient number, since it is larger than the sum of its proper divisors (17975963793).

40440918159 is a wasteful number, since it uses less digits than its factorization.

40440918159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170958 (or 170955 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 40440918159 in words is "forty billion, four hundred forty million, nine hundred eighteen thousand, one hundred fifty-nine".