40408764667 has 2 divisors, whose sum is σ = 40408764668. Its totient is φ = 40408764666.

The previous prime is 40408764637. The next prime is 40408764727. The reversal of 40408764667 is 76646780404.

40408764667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40408764667 - 2²³ = 40400376059 is a prime.

It is not a weakly prime, because it can be changed into another prime (40408764637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20204382333 + 20204382334.

It is an arithmetic number, because the mean of its divisors is an integer number (20204382334).

Almost surely, 2^40408764667 is an apocalyptic number.

40408764667 is a deficient number, since it is larger than the sum of its proper divisors (1).

40408764667 is an equidigital number, since it uses as much as digits as its factorization.

40408764667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 52.

The spelling of 40408764667 in words is "forty billion, four hundred eight million, seven hundred sixty-four thousand, six hundred sixty-seven".