78327080285 has 8 divisors (see below), whose sum is σ = 94009816536. Its totient is φ = 62650117440.

The previous prime is 78327080269. The next prime is 78327080333. The reversal of 78327080285 is 58208072387.

It can be written as a sum of positive squares in 4 ways, for example, as 14308465924 + 64018614361 = 119618^2 + 253019^2 .

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

It is not a de Polignac number, because 78327080285 - 2⁴ = 78327080269 is a prime.

It is a super-2 number, since 2×78327080285² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413446 + ... + 1467815.

It is an arithmetic number, because the mean of its divisors is an integer number (11751227067).

Almost surely, 2^78327080285 is an apocalyptic number.

It is an amenable number.

78327080285 is a deficient number, since it is larger than the sum of its proper divisors (15682736251).

78327080285 is a wasteful number, since it uses less digits than its factorization.

78327080285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886703.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 78327080285 in words is "seventy-eight billion, three hundred twenty-seven million, eighty thousand, two hundred eighty-five".