40686546079 has 2 divisors, whose sum is σ = 40686546080. Its totient is φ = 40686546078.

The previous prime is 40686546053. The next prime is 40686546107. The reversal of 40686546079 is 97064568604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40686546079 - 2¹³ = 40686537887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40687546079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20343273039 + 20343273040.

It is an arithmetic number, because the mean of its divisors is an integer number (20343273040).

Almost surely, 2^40686546079 is an apocalyptic number.

40686546079 is a deficient number, since it is larger than the sum of its proper divisors (1).

40686546079 is an equidigital number, since it uses as much as digits as its factorization.

40686546079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 40686546079 in words is "forty billion, six hundred eighty-six million, five hundred forty-six thousand, seventy-nine".