40365641504 has 24 divisors (see below), whose sum is σ = 79578320220. Its totient is φ = 20155274496.

The previous prime is 40365641497. The next prime is 40365641509. The reversal of 40365641504 is 40514656304.

It can be written as a sum of positive squares in 2 ways, for example, as 38486592400 + 1879049104 = 196180^2 + 43348^2 .

It is not an unprimeable number, because it can be changed into a prime (40365641509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836999 + ... + 883910.

Almost surely, 2^40365641504 is an apocalyptic number.

It is an amenable number.

40365641504 is a deficient number, since it is larger than the sum of its proper divisors (39212678716).

40365641504 is a wasteful number, since it uses less digits than its factorization.

40365641504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721652 (or 1721644 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 40365641504 in words is "forty billion, three hundred sixty-five million, six hundred forty-one thousand, five hundred four".