806901136128 has 144 divisors (see below), whose sum is σ = 2416354662400. Its totient is φ = 265562219520.

The previous prime is 806901136109. The next prime is 806901136193. The reversal of 806901136128 is 821631109608.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×806901136128³ (a number of 37 digits) contains 333 as substring.

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, 192808 + ... + 1284903.

Almost surely, 2^806901136128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 806901136128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208177331200).

806901136128 is an abundant number, since it is smaller than the sum of its proper divisors (1609453526272).

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

806901136128 is a wasteful number, since it uses less digits than its factorization.

806901136128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477815 (or 1477795 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 806901136128 in words is "eight hundred six billion, nine hundred one million, one hundred thirty-six thousand, one hundred twenty-eight".