105861641578 has 64 divisors (see below), whose sum is σ = 203222670336. Its totient is φ = 40155696000.

The previous prime is 105861641533. The next prime is 105861641581. The reversal of 105861641578 is 875146168501.

It is a super-2 number, since 2×105861641578² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3083101 + ... + 3117247.

It is an arithmetic number, because the mean of its divisors is an integer number (3175354224).

Almost surely, 2^105861641578 is an apocalyptic number.

105861641578 is a deficient number, since it is larger than the sum of its proper divisors (97361028758).

105861641578 is a wasteful number, since it uses less digits than its factorization.

105861641578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34699.

The product of its (nonzero) digits is 1612800, while the sum is 52.

The spelling of 105861641578 in words is "one hundred five billion, eight hundred sixty-one million, six hundred forty-one thousand, five hundred seventy-eight".