48148581991 has 2 divisors, whose sum is σ = 48148581992. Its totient is φ = 48148581990.

The previous prime is 48148581989. The next prime is 48148582003. The reversal of 48148581991 is 19918584184.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 48148581991 - 2¹ = 48148581989 is a prime.

Together with 48148581989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48148582991) 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, 24074290995 + 24074290996.

It is an arithmetic number, because the mean of its divisors is an integer number (24074290996).

Almost surely, 2^48148581991 is an apocalyptic number.

48148581991 is a deficient number, since it is larger than the sum of its proper divisors (1).

48148581991 is an equidigital number, since it uses as much as digits as its factorization.

48148581991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 58.

The spelling of 48148581991 in words is "forty-eight billion, one hundred forty-eight million, five hundred eighty-one thousand, nine hundred ninety-one".