40643016611 has 4 divisors (see below), whose sum is σ = 43033782312. Its totient is φ = 38252250912.

The previous prime is 40643016607. The next prime is 40643016683. The reversal of 40643016611 is 11661034604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40643016611 - 2² = 40643016607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40643016691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195382825 + ... + 1195382858.

It is an arithmetic number, because the mean of its divisors is an integer number (10758445578).

Almost surely, 2^40643016611 is an apocalyptic number.

40643016611 is a deficient number, since it is larger than the sum of its proper divisors (2390765701).

40643016611 is a wasteful number, since it uses less digits than its factorization.

40643016611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390765700.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 40643016611 in words is "forty billion, six hundred forty-three million, sixteen thousand, six hundred eleven".