40145423520105 has 24 divisors (see below), whose sum is σ = 69585549101640. Its totient is φ = 21410846903040.

The previous prime is 40145423520079. The next prime is 40145423520113. The reversal of 40145423520105 is 50102532454104.

40145423520105 is a `hidden beast` number, since 4 + 0 + 1 + 4 + 5 + 4 + 23 + 520 + 105 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17367989570064 + 22777433950041 = 4167492^2 + 4772571^2 .

It is not a de Polignac number, because 40145423520105 - 2⁷ = 40145423519977 is a prime.

It is a super-2 number, since 2×40145423520105² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40145423520105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37327795 + ... + 38388215.

It is an arithmetic number, because the mean of its divisors is an integer number (2899397879235).

Almost surely, 2^{40145423520105} is an apocalyptic number.

40145423520105 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40145423520105 is a deficient number, since it is larger than the sum of its proper divisors (29440125581535).

40145423520105 is a wasteful number, since it uses less digits than its factorization.

40145423520105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901721 (or 1901718 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 40145423520105 its reverse (50102532454104), we get a palindrome (90247955974209).

The spelling of 40145423520105 in words is "forty trillion, one hundred forty-five billion, four hundred twenty-three million, five hundred twenty thousand, one hundred five".