40636065605 has 16 divisors (see below), whose sum is σ = 51344988480. Its totient is φ = 30788727552.

The previous prime is 40636065599. The next prime is 40636065619. The reversal of 40636065605 is 50656063604.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40636065605 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267677 + ... + 391053.

It is an arithmetic number, because the mean of its divisors is an integer number (3209061780).

Almost surely, 2^40636065605 is an apocalyptic number.

It is an amenable number.

40636065605 is a deficient number, since it is larger than the sum of its proper divisors (10708922875).

40636065605 is a wasteful number, since it uses less digits than its factorization.

40636065605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126868.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 40636065605 in words is "forty billion, six hundred thirty-six million, sixty-five thousand, six hundred five".