105711856438 has 8 divisors (see below), whose sum is σ = 162255407688. Its totient is φ = 51626720544.

The previous prime is 105711856403. The next prime is 105711856457. The reversal of 105711856438 is 834658117501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105711856438² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105711856391 and 105711856400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614603731 + ... + 614603902.

It is an arithmetic number, because the mean of its divisors is an integer number (20281925961).

Almost surely, 2^105711856438 is an apocalyptic number.

105711856438 is a deficient number, since it is larger than the sum of its proper divisors (56543551250).

105711856438 is a wasteful number, since it uses less digits than its factorization.

105711856438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229207678.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 105711856438 in words is "one hundred five billion, seven hundred eleven million, eight hundred fifty-six thousand, four hundred thirty-eight".