10004065812 has 96 divisors (see below), whose sum is σ = 28035714560. Its totient is φ = 3066698880.

The previous prime is 10004065811. The next prime is 10004065843. The reversal of 10004065812 is 21856040001.

10004065812 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 4 + 0 + 658 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10004065811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367338 + ... + 393630.

Almost surely, 2^10004065812 is an apocalyptic number.

10004065812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10004065812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14017857280).

10004065812 is an abundant number, since it is smaller than the sum of its proper divisors (18031648748).

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

10004065812 is a wasteful number, since it uses less digits than its factorization.

10004065812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26590 (or 26582 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The spelling of 10004065812 in words is "ten billion, four million, sixty-five thousand, eight hundred twelve".