40590813965 has 8 divisors (see below), whose sum is σ = 52455821208. Its totient is φ = 29974754880.

The previous prime is 40590813961. The next prime is 40590813983. The reversal of 40590813965 is 56931809504.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7593728164 + 32997085801 = 87142^2 + 181651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40590813965 - 2² = 40590813961 is a prime.

It is a super-2 number, since 2×40590813965² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40590813961) 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 7 ways as a sum of consecutive naturals, for example, 312236966 + ... + 312237095.

It is an arithmetic number, because the mean of its divisors is an integer number (6556977651).

Almost surely, 2^40590813965 is an apocalyptic number.

It is an amenable number.

40590813965 is a deficient number, since it is larger than the sum of its proper divisors (11865007243).

40590813965 is a wasteful number, since it uses less digits than its factorization.

40590813965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624474079.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 40590813965 in words is "forty billion, five hundred ninety million, eight hundred thirteen thousand, nine hundred sixty-five".