10505855807 has 2 divisors, whose sum is σ = 10505855808. Its totient is φ = 10505855806.

The previous prime is 10505855783. The next prime is 10505855819. The reversal of 10505855807 is 70855850501.

It is a strong prime.

It is an emirp because it is prime and its reverse (70855850501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10505855807 - 2¹⁸ = 10505593663 is a prime.

It is a super-2 number, since 2×10505855807² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10505855207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252927903 + 5252927904.

It is an arithmetic number, because the mean of its divisors is an integer number (5252927904).

Almost surely, 2^10505855807 is an apocalyptic number.

10505855807 is a deficient number, since it is larger than the sum of its proper divisors (1).

10505855807 is an equidigital number, since it uses as much as digits as its factorization.

10505855807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280000, while the sum is 44.

The spelling of 10505855807 in words is "ten billion, five hundred five million, eight hundred fifty-five thousand, eight hundred seven".