11860169850 has 180 divisors, whose sum is σ = 35009635914. Its totient is φ = 2976376320.

The previous prime is 11860169779. The next prime is 11860169869. The reversal of 11860169850 is 5896106811.

It can be written as a sum of positive squares in 9 ways, for example, as 5020714449 + 6839455401 = 70857^2 + 82701^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 11860169796 and 11860169805.

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 89 ways as a sum of consecutive naturals, for example, 1165384 + ... + 1175516.

Almost surely, 2^11860169850 is an apocalyptic number.

11860169850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11860169850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17504817957).

11860169850 is an abundant number, since it is smaller than the sum of its proper divisors (23149466064).

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

11860169850 is a wasteful number, since it uses less digits than its factorization.

11860169850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10191 (or 10160 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The spelling of 11860169850 in words is "eleven billion, eight hundred sixty million, one hundred sixty-nine thousand, eight hundred fifty".