40011512243 has 2 divisors, whose sum is σ = 40011512244. Its totient is φ = 40011512242.

The previous prime is 40011512213. The next prime is 40011512323. The reversal of 40011512243 is 34221511004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40011512243 - 2⁸ = 40011511987 is a prime.

It is a super-2 number, since 2×40011512243² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40011512213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20005756121 + 20005756122.

It is an arithmetic number, because the mean of its divisors is an integer number (20005756122).

Almost surely, 2^40011512243 is an apocalyptic number.

40011512243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40011512243 is an equidigital number, since it uses as much as digits as its factorization.

40011512243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 40011512243 in words is "forty billion, eleven million, five hundred twelve thousand, two hundred forty-three".