40765403065 has 16 divisors (see below), whose sum is σ = 50005440000. Its totient is φ = 31893414912.

The previous prime is 40765403057. The next prime is 40765403069. The reversal of 40765403065 is 56030456704.

It is a cyclic number.

It is not a de Polignac number, because 40765403065 - 2³ = 40765403057 is a prime.

It is a super-2 number, since 2×40765403065² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40765403069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301065 + ... + 414934.

It is an arithmetic number, because the mean of its divisors is an integer number (3125340000).

Almost surely, 2^40765403065 is an apocalyptic number.

It is an amenable number.

40765403065 is a deficient number, since it is larger than the sum of its proper divisors (9240036935).

40765403065 is a wasteful number, since it uses less digits than its factorization.

40765403065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716256.

The product of its (nonzero) digits is 302400, while the sum is 40.

Adding to 40765403065 its reverse (56030456704), we get a palindrome (96795859769).

The spelling of 40765403065 in words is "forty billion, seven hundred sixty-five million, four hundred three thousand, sixty-five".