10685865198 has 48 divisors (see below), whose sum is σ = 22195771344. Its totient is φ = 3428759040.

The previous prime is 10685865167. The next prime is 10685865283. The reversal of 10685865198 is 89156858601.

It is a happy number.

It is a super-2 number, since 2×10685865198² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 801886 + ... + 815102.

It is an arithmetic number, because the mean of its divisors is an integer number (462411903).

Almost surely, 2^10685865198 is an apocalyptic number.

10685865198 is an abundant number, since it is smaller than the sum of its proper divisors (11509906146).

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

10685865198 is a wasteful number, since it uses less digits than its factorization.

10685865198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13377 (or 13330 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 57.

The spelling of 10685865198 in words is "ten billion, six hundred eighty-five million, eight hundred sixty-five thousand, one hundred ninety-eight".