49989881191 has 2 divisors, whose sum is σ = 49989881192. Its totient is φ = 49989881190.

The previous prime is 49989881129. The next prime is 49989881269. The reversal of 49989881191 is 19118898994.

49989881191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49989881191 - 2²⁷ = 49855663463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49989881791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24994940595 + 24994940596.

It is an arithmetic number, because the mean of its divisors is an integer number (24994940596).

Almost surely, 2^49989881191 is an apocalyptic number.

49989881191 is a deficient number, since it is larger than the sum of its proper divisors (1).

49989881191 is an equidigital number, since it uses as much as digits as its factorization.

49989881191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13436928, while the sum is 67.

The spelling of 49989881191 in words is "forty-nine billion, nine hundred eighty-nine million, eight hundred eighty-one thousand, one hundred ninety-one".