40243241851 has 2 divisors, whose sum is σ = 40243241852. Its totient is φ = 40243241850.

The previous prime is 40243241837. The next prime is 40243241879. The reversal of 40243241851 is 15814234204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40243241851 - 2¹⁷ = 40243110779 is a prime.

It is not a weakly prime, because it can be changed into another prime (40243241351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121620925 + 20121620926.

It is an arithmetic number, because the mean of its divisors is an integer number (20121620926).

Almost surely, 2^40243241851 is an apocalyptic number.

40243241851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243241851 is an equidigital number, since it uses as much as digits as its factorization.

40243241851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 40243241851 in words is "forty billion, two hundred forty-three million, two hundred forty-one thousand, eight hundred fifty-one".