78256495586 has 16 divisors (see below), whose sum is σ = 120441957504. Its totient is φ = 38114136144.

The previous prime is 78256495561. The next prime is 78256495601. The reversal of 78256495586 is 68559465287.

It is a super-2 number, since 2×78256495586² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1208165 + ... + 1271288.

It is an arithmetic number, because the mean of its divisors is an integer number (7527622344).

Almost surely, 2^78256495586 is an apocalyptic number.

78256495586 is a deficient number, since it is larger than the sum of its proper divisors (42185461918).

78256495586 is a wasteful number, since it uses less digits than its factorization.

78256495586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479865.

The product of its digits is 145152000, while the sum is 65.

The spelling of 78256495586 in words is "seventy-eight billion, two hundred fifty-six million, four hundred ninety-five thousand, five hundred eighty-six".