10505049557791 has 2 divisors, whose sum is σ = 10505049557792. Its totient is φ = 10505049557790.

The previous prime is 10505049557789. The next prime is 10505049557851. The reversal of 10505049557791 is 19775594050501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10505049557791 - 2¹ = 10505049557789 is a prime.

It is a super-2 number, since 2×10505049557791² (a number of 27 digits) contains 22 as substring.

Together with 10505049557789, 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 (10505049857791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252524778895 + 5252524778896.

It is an arithmetic number, because the mean of its divisors is an integer number (5252524778896).

Almost surely, 2^{10505049557791} is an apocalyptic number.

10505049557791 is a deficient number, since it is larger than the sum of its proper divisors (1).

10505049557791 is an equidigital number, since it uses as much as digits as its factorization.

10505049557791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9922500, while the sum is 58.

The spelling of 10505049557791 in words is "ten trillion, five hundred five billion, forty-nine million, five hundred fifty-seven thousand, seven hundred ninety-one".