49905333991 has 2 divisors, whose sum is σ = 49905333992. Its totient is φ = 49905333990.

The previous prime is 49905333949. The next prime is 49905334019. The reversal of 49905333991 is 19933350994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49905333991 - 2⁹ = 49905333479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49905333931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24952666995 + 24952666996.

It is an arithmetic number, because the mean of its divisors is an integer number (24952666996).

Almost surely, 2^49905333991 is an apocalyptic number.

49905333991 is a deficient number, since it is larger than the sum of its proper divisors (1).

49905333991 is an equidigital number, since it uses as much as digits as its factorization.

49905333991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3542940, while the sum is 55.

The spelling of 49905333991 in words is "forty-nine billion, nine hundred five million, three hundred thirty-three thousand, nine hundred ninety-one".