40234311705645 has 24 divisors (see below), whose sum is σ = 69787470621336. Its totient is φ = 21443531269248.

The previous prime is 40234311705641. The next prime is 40234311705667. The reversal of 40234311705645 is 54650711343204.

40234311705645 is a `hidden beast` number, since 4 + 0 + 2 + 3 + 4 + 3 + 11 + 70 + 564 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20140447571721 + 20093864133924 = 4487811^2 + 4482618^2 .

It is not a de Polignac number, because 40234311705645 - 2² = 40234311705641 is a prime.

It is a super-3 number, since 3×40234311705645³ (a number of 42 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 40234311705645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40234311705641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307606954 + ... + 307737723.

It is an arithmetic number, because the mean of its divisors is an integer number (2907811275889).

Almost surely, 2^{40234311705645} is an apocalyptic number.

40234311705645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40234311705645 is a deficient number, since it is larger than the sum of its proper divisors (29553158915691).

40234311705645 is a wasteful number, since it uses less digits than its factorization.

40234311705645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615346141 (or 615346138 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 40234311705645 in words is "forty trillion, two hundred thirty-four billion, three hundred eleven million, seven hundred five thousand, six hundred forty-five".