78284736586 has 48 divisors (see below), whose sum is σ = 141759578304. Its totient is φ = 31757375808.

The previous prime is 78284736581. The next prime is 78284736727. The reversal of 78284736586 is 68563748287.

It is a super-4 number, since 4×78284736586⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (78284736581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6478246 + ... + 6490318.

It is an arithmetic number, because the mean of its divisors is an integer number (2953324548).

Almost surely, 2^78284736586 is an apocalyptic number.

78284736586 is a deficient number, since it is larger than the sum of its proper divisors (63474841718).

78284736586 is a wasteful number, since it uses less digits than its factorization.

78284736586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13403 (or 13384 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 64.

The spelling of 78284736586 in words is "seventy-eight billion, two hundred eighty-four million, seven hundred thirty-six thousand, five hundred eighty-six".