105260289991 has 2 divisors, whose sum is σ = 105260289992. Its totient is φ = 105260289990.

The previous prime is 105260289977. The next prime is 105260290001. The reversal of 105260289991 is 199982062501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105260289991 - 2¹⁷ = 105260158919 is a prime.

It is a super-2 number, since 2×105260289991² (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 (105260289941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52630144995 + 52630144996.

It is an arithmetic number, because the mean of its divisors is an integer number (52630144996).

Almost surely, 2^105260289991 is an apocalyptic number.

105260289991 is a deficient number, since it is larger than the sum of its proper divisors (1).

105260289991 is an equidigital number, since it uses as much as digits as its factorization.

105260289991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 105260289991 in words is "one hundred five billion, two hundred sixty million, two hundred eighty-nine thousand, nine hundred ninety-one".