49181527091 has 2 divisors, whose sum is σ = 49181527092. Its totient is φ = 49181527090.

The previous prime is 49181527067. The next prime is 49181527093. The reversal of 49181527091 is 19072518194.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49181527091 is a prime.

Together with 49181527093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49181527093) 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, 24590763545 + 24590763546.

It is an arithmetic number, because the mean of its divisors is an integer number (24590763546).

Almost surely, 2^49181527091 is an apocalyptic number.

49181527091 is a deficient number, since it is larger than the sum of its proper divisors (1).

49181527091 is an equidigital number, since it uses as much as digits as its factorization.

49181527091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 49181527091 in words is "forty-nine billion, one hundred eighty-one million, five hundred twenty-seven thousand, ninety-one".