78907086805 has 8 divisors (see below), whose sum is σ = 94696371000. Its totient is φ = 63120424896.

The previous prime is 78907086803. The next prime is 78907086829. The reversal of 78907086805 is 50868070987.

It can be written as a sum of positive squares in 4 ways, for example, as 36434410884 + 42472675921 = 190878^2 + 206089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78907086805 - 2¹ = 78907086803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78907086805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78907086803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588750 + ... + 710239.

It is an arithmetic number, because the mean of its divisors is an integer number (11837046375).

Almost surely, 2^78907086805 is an apocalyptic number.

It is an amenable number.

78907086805 is a deficient number, since it is larger than the sum of its proper divisors (15789284195).

78907086805 is a wasteful number, since it uses less digits than its factorization.

78907086805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311143.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The spelling of 78907086805 in words is "seventy-eight billion, nine hundred seven million, eighty-six thousand, eight hundred five".