806166128000 has 128 divisors (see below), whose sum is σ = 2073446575200. Its totient is φ = 311346739200.

The previous prime is 806166127979. The next prime is 806166128059. The reversal of 806166128000 is 821661608.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404714 + ... + 1332713.

Almost surely, 2^806166128000 is an apocalyptic number.

806166128000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

806166128000 is an abundant number, since it is smaller than the sum of its proper divisors (1267280447200).

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

806166128000 is a wasteful number, since it uses less digits than its factorization.

806166128000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737485 (or 1737463 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

Adding to 806166128000 its reverse (821661608), we get a palindrome (806987789608).

The spelling of 806166128000 in words is "eight hundred six billion, one hundred sixty-six million, one hundred twenty-eight thousand".