840793827664 has 40 divisors (see below), whose sum is σ = 1866077491968. Its totient is φ = 359504135040.

The previous prime is 840793827613. The next prime is 840793827749. The reversal of 840793827664 is 466728397048.

It is a junction number, because it is equal to n+sod(n) for n = 840793827596 and 840793827605.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8660647 + ... + 8757190.

Almost surely, 2^840793827664 is an apocalyptic number.

It is an amenable number.

840793827664 is an abundant number, since it is smaller than the sum of its proper divisors (1025283664304).

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

840793827664 is a wasteful number, since it uses less digits than its factorization.

840793827664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17418283 (or 17418277 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 64.

The spelling of 840793827664 in words is "eight hundred forty billion, seven hundred ninety-three million, eight hundred twenty-seven thousand, six hundred sixty-four".