784627040861 has 16 divisors (see below), whose sum is σ = 796584015360. Its totient is φ = 772723311360.

The previous prime is 784627040839. The next prime is 784627040867. The reversal of 784627040861 is 168040726487.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-784627040861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (784627040867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51704471 + ... + 51719643.

It is an arithmetic number, because the mean of its divisors is an integer number (49786500960).

Almost surely, 2^784627040861 is an apocalyptic number.

It is an amenable number.

784627040861 is a deficient number, since it is larger than the sum of its proper divisors (11956974499).

784627040861 is a wasteful number, since it uses less digits than its factorization.

784627040861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16876.

The product of its (nonzero) digits is 3612672, while the sum is 53.

The spelling of 784627040861 in words is "seven hundred eighty-four billion, six hundred twenty-seven million, forty thousand, eight hundred sixty-one".