78285674285 has 32 divisors (see below), whose sum is σ = 117015010560. Its totient is φ = 48955212288.

The previous prime is 78285674263. The next prime is 78285674309. The reversal of 78285674285 is 58247658287.

It is a cyclic number.

It is not a de Polignac number, because 78285674285 - 2¹⁰ = 78285673261 is a prime.

It is a super-2 number, since 2×78285674285² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998720 + ... + 1074249.

It is an arithmetic number, because the mean of its divisors is an integer number (3656719080).

Almost surely, 2^78285674285 is an apocalyptic number.

It is an amenable number.

78285674285 is a deficient number, since it is larger than the sum of its proper divisors (38729336275).

78285674285 is a wasteful number, since it uses less digits than its factorization.

78285674285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073077.

The product of its digits is 60211200, while the sum is 62.

The spelling of 78285674285 in words is "seventy-eight billion, two hundred eighty-five million, six hundred seventy-four thousand, two hundred eighty-five".