40440170765 has 4 divisors (see below), whose sum is σ = 48528204924. Its totient is φ = 32352136608.

The previous prime is 40440170753. The next prime is 40440170773. The reversal of 40440170765 is 56707104404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19171448521 + 21268722244 = 138461^2 + 145838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40440170765 is a prime.

It is a super-3 number, since 3×40440170765³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4044017072 + ... + 4044017081.

It is an arithmetic number, because the mean of its divisors is an integer number (12132051231).

Almost surely, 2^40440170765 is an apocalyptic number.

It is an amenable number.

40440170765 is a deficient number, since it is larger than the sum of its proper divisors (8088034159).

40440170765 is an equidigital number, since it uses as much as digits as its factorization.

40440170765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088034158.

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 40440170765 in words is "forty billion, four hundred forty million, one hundred seventy thousand, seven hundred sixty-five".