40552421191 has 2 divisors, whose sum is σ = 40552421192. Its totient is φ = 40552421190.

The previous prime is 40552421141. The next prime is 40552421233. The reversal of 40552421191 is 19112425504.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40552421191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40552421111) 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, 20276210595 + 20276210596.

It is an arithmetic number, because the mean of its divisors is an integer number (20276210596).

Almost surely, 2^40552421191 is an apocalyptic number.

40552421191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40552421191 is an equidigital number, since it uses as much as digits as its factorization.

40552421191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

Adding to 40552421191 its reverse (19112425504), we get a palindrome (59664846695).

The spelling of 40552421191 in words is "forty billion, five hundred fifty-two million, four hundred twenty-one thousand, one hundred ninety-one".