3855985102197 has 12 divisors (see below), whose sum is σ = 5591946525984. Its totient is φ = 2560415073000.

The previous prime is 3855985102181. The next prime is 3855985102259. The reversal of 3855985102197 is 7912015895583.

3855985102197 is a `hidden beast` number, since 3 + 8 + 5 + 5 + 9 + 8 + 510 + 21 + 97 = 666.

It is not a de Polignac number, because 3855985102197 - 2⁴ = 3855985102181 is a prime.

It is a super-2 number, since 2×3855985102197² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855985102157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 853469433 + ... + 853473950.

It is an arithmetic number, because the mean of its divisors is an integer number (465995543832).

Almost surely, 2^{3855985102197} is an apocalyptic number.

It is an amenable number.

3855985102197 is a deficient number, since it is larger than the sum of its proper divisors (1735961423787).

3855985102197 is a wasteful number, since it uses less digits than its factorization.

3855985102197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706943640 (or 1706943637 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 63.

The spelling of 3855985102197 in words is "three trillion, eight hundred fifty-five billion, nine hundred eighty-five million, one hundred two thousand, one hundred ninety-seven".