385128031266 has 64 divisors (see below), whose sum is σ = 933907328640. Its totient is φ = 116672512320.

The previous prime is 385128031261. The next prime is 385128031271. The reversal of 385128031266 is 662130821583.

385128031266 is a `hidden beast` number, since 3 + 8 + 51 + 280 + 312 + 6 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (385128031261) and next prime (385128031271).

It is not an unprimeable number, because it can be changed into a prime (385128031261) by changing a digit.

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, 2056396 + ... + 2235848.

It is an arithmetic number, because the mean of its divisors is an integer number (14592302010).

Almost surely, 2^385128031266 is an apocalyptic number.

385128031266 is an abundant number, since it is smaller than the sum of its proper divisors (548779297374).

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

385128031266 is a wasteful number, since it uses less digits than its factorization.

385128031266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183088 (or 183082 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 385128031266 in words is "three hundred eighty-five billion, one hundred twenty-eight million, thirty-one thousand, two hundred sixty-six".