40655071867 has 2 divisors, whose sum is σ = 40655071868. Its totient is φ = 40655071866.

The previous prime is 40655071843. The next prime is 40655071909. The reversal of 40655071867 is 76817055604.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40655071867 - 2⁷ = 40655071739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40655071867.

It is not a weakly prime, because it can be changed into another prime (40655071367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20327535933 + 20327535934.

It is an arithmetic number, because the mean of its divisors is an integer number (20327535934).

Almost surely, 2^40655071867 is an apocalyptic number.

40655071867 is a deficient number, since it is larger than the sum of its proper divisors (1).

40655071867 is an equidigital number, since it uses as much as digits as its factorization.

40655071867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 40655071867 in words is "forty billion, six hundred fifty-five million, seventy-one thousand, eight hundred sixty-seven".