48905647691 has 2 divisors, whose sum is σ = 48905647692. Its totient is φ = 48905647690.

The previous prime is 48905647643. The next prime is 48905647727. The reversal of 48905647691 is 19674650984.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48905647691 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 48905647691.

It is not a weakly prime, because it can be changed into another prime (48905647631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24452823845 + 24452823846.

It is an arithmetic number, because the mean of its divisors is an integer number (24452823846).

Almost surely, 2^48905647691 is an apocalyptic number.

48905647691 is a deficient number, since it is larger than the sum of its proper divisors (1).

48905647691 is an equidigital number, since it uses as much as digits as its factorization.

48905647691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 48905647691 in words is "forty-eight billion, nine hundred five million, six hundred forty-seven thousand, six hundred ninety-one".