105516561504791 has 2 divisors, whose sum is σ = 105516561504792. Its totient is φ = 105516561504790.

The previous prime is 105516561504773. The next prime is 105516561504859. The reversal of 105516561504791 is 197405165615501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105516561504791 - 2²² = 105516557310487 is a prime.

It is a super-2 number, since 2×105516561504791² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105516561504091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52758280752395 + 52758280752396.

It is an arithmetic number, because the mean of its divisors is an integer number (52758280752396).

Almost surely, 2^{105516561504791} is an apocalyptic number.

105516561504791 is a deficient number, since it is larger than the sum of its proper divisors (1).

105516561504791 is an equidigital number, since it uses as much as digits as its factorization.

105516561504791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670000, while the sum is 56.

The spelling of 105516561504791 in words is "one hundred five trillion, five hundred sixteen billion, five hundred sixty-one million, five hundred four thousand, seven hundred ninety-one".