40587145065 has 20 divisors (see below), whose sum is σ = 72756216324. Its totient is φ = 21646477152.

The previous prime is 40587145031. The next prime is 40587145111. The reversal of 40587145065 is 56054178504.

40587145065 is a `hidden beast` number, since 4 + 0 + 587 + 1 + 4 + 5 + 0 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12957724224 + 27629420841 = 113832^2 + 166221^2 .

It is not a de Polignac number, because 40587145065 - 2¹³ = 40587136873 is a prime.

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 40587145065.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50107182 + ... + 50107991.

Almost surely, 2^40587145065 is an apocalyptic number.

40587145065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40587145065 is a deficient number, since it is larger than the sum of its proper divisors (32169071259).

40587145065 is a wasteful number, since it uses less digits than its factorization.

40587145065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100215190 (or 100215181 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 40587145065 in words is "forty billion, five hundred eighty-seven million, one hundred forty-five thousand, sixty-five".