105565655639 has 2 divisors, whose sum is σ = 105565655640. Its totient is φ = 105565655638.

The previous prime is 105565655597. The next prime is 105565655651. The reversal of 105565655639 is 936556565501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105565655639 - 2⁸ = 105565655383 is a prime.

It is a super-2 number, since 2×105565655639² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105565675639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52782827819 + 52782827820.

It is an arithmetic number, because the mean of its divisors is an integer number (52782827820).

Almost surely, 2^105565655639 is an apocalyptic number.

105565655639 is a deficient number, since it is larger than the sum of its proper divisors (1).

105565655639 is an equidigital number, since it uses as much as digits as its factorization.

105565655639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18225000, while the sum is 56.

The spelling of 105565655639 in words is "one hundred five billion, five hundred sixty-five million, six hundred fifty-five thousand, six hundred thirty-nine".