105261866381 has 16 divisors (see below), whose sum is σ = 127422771840. Its totient is φ = 84885757440.

The previous prime is 105261866357. The next prime is 105261866419. The reversal of 105261866381 is 183668162501.

It is a cyclic number.

It is not a de Polignac number, because 105261866381 - 2⁶ = 105261866317 is a prime.

It is a super-2 number, since 2×105261866381² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105261866321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162686 + ... + 486816.

It is an arithmetic number, because the mean of its divisors is an integer number (7963923240).

Almost surely, 2^105261866381 is an apocalyptic number.

It is an amenable number.

105261866381 is a deficient number, since it is larger than the sum of its proper divisors (22160905459).

105261866381 is a wasteful number, since it uses less digits than its factorization.

105261866381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326884.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 105261866381 in words is "one hundred five billion, two hundred sixty-one million, eight hundred sixty-six thousand, three hundred eighty-one".