806227342640 has 80 divisors (see below), whose sum is σ = 1908461323872. Its totient is φ = 316674834432.

The previous prime is 806227342579. The next prime is 806227342649. The reversal of 806227342640 is 46243722608.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 806227342591 and 806227342600.

It is not an unprimeable number, because it can be changed into a prime (806227342649) 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 15 ways as a sum of consecutive naturals, for example, 1461872 + ... + 1936368.

Almost surely, 2^806227342640 is an apocalyptic number.

806227342640 is a gapful number since it is divisible by the number (80) 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 806227342640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954230661936).

806227342640 is an abundant number, since it is smaller than the sum of its proper divisors (1102233981232).

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

806227342640 is a wasteful number, since it uses less digits than its factorization.

806227342640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474894 (or 474888 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 44.

The spelling of 806227342640 in words is "eight hundred six billion, two hundred twenty-seven million, three hundred forty-two thousand, six hundred forty".