40091915329 has 2 divisors, whose sum is σ = 40091915330. Its totient is φ = 40091915328.

The previous prime is 40091915267. The next prime is 40091915359. The reversal of 40091915329 is 92351919004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37423676304 + 2668239025 = 193452^2 + 51655^2 .

It is a cyclic number.

It is not a de Polignac number, because 40091915329 - 2²¹ = 40089818177 is a prime.

It is not a weakly prime, because it can be changed into another prime (40091915359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20045957664 + 20045957665.

It is an arithmetic number, because the mean of its divisors is an integer number (20045957665).

Almost surely, 2^40091915329 is an apocalyptic number.

It is an amenable number.

40091915329 is a deficient number, since it is larger than the sum of its proper divisors (1).

40091915329 is an equidigital number, since it uses as much as digits as its factorization.

40091915329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 43.

The spelling of 40091915329 in words is "forty billion, ninety-one million, nine hundred fifteen thousand, three hundred twenty-nine".