40323721247 has 2 divisors, whose sum is σ = 40323721248. Its totient is φ = 40323721246.

The previous prime is 40323721219. The next prime is 40323721267. The reversal of 40323721247 is 74212732304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40323721247 - 2⁸ = 40323720991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40323721267) 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 as a sum of consecutive naturals, namely, 20161860623 + 20161860624.

It is an arithmetic number, because the mean of its divisors is an integer number (20161860624).

Almost surely, 2^40323721247 is an apocalyptic number.

40323721247 is a deficient number, since it is larger than the sum of its proper divisors (1).

40323721247 is an equidigital number, since it uses as much as digits as its factorization.

40323721247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 35.

The spelling of 40323721247 in words is "forty billion, three hundred twenty-three million, seven hundred twenty-one thousand, two hundred forty-seven".