40646707187 has 2 divisors, whose sum is σ = 40646707188. Its totient is φ = 40646707186.

The previous prime is 40646707177. The next prime is 40646707249. The reversal of 40646707187 is 78170764604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40646707187 - 2⁸ = 40646706931 is a prime.

It is not a weakly prime, because it can be changed into another prime (40646707177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20323353593 + 20323353594.

It is an arithmetic number, because the mean of its divisors is an integer number (20323353594).

Almost surely, 2^40646707187 is an apocalyptic number.

40646707187 is a deficient number, since it is larger than the sum of its proper divisors (1).

40646707187 is an equidigital number, since it uses as much as digits as its factorization.

40646707187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 40646707187 in words is "forty billion, six hundred forty-six million, seven hundred seven thousand, one hundred eighty-seven".