105661060650 has 72 divisors (see below), whose sum is σ = 293664915180. Its totient is φ = 27204683520.

The previous prime is 105661060627. The next prime is 105661060693. The reversal of 105661060650 is 56060166501.

It can be written as a sum of positive squares in 6 ways, for example, as 23387890761 + 82273169889 = 152931^2 + 286833^2 .

It is a super-2 number, since 2×105661060650² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

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 35 ways as a sum of consecutive naturals, for example, 4035267 + ... + 4061366.

Almost surely, 2^105661060650 is an apocalyptic number.

105661060650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105661060650 is an abundant number, since it is smaller than the sum of its proper divisors (188003854530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105661060650 is a wasteful number, since it uses less digits than its factorization.

105661060650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8096680 (or 8096672 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 105661060650 in words is "one hundred five billion, six hundred sixty-one million, sixty thousand, six hundred fifty".