78282117459 has 48 divisors (see below), whose sum is σ = 139197519552. Its totient is φ = 41282970624.

The previous prime is 78282117457. The next prime is 78282117517. The reversal of 78282117459 is 95471128287.

78282117459 is a `hidden beast` number, since 78 + 2 + 8 + 2 + 117 + 459 = 666.

It is not a de Polignac number, because 78282117459 - 2¹ = 78282117457 is a prime.

It is a super-2 number, since 2×78282117459² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78282117457) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 6277959 + ... + 6290415.

It is an arithmetic number, because the mean of its divisors is an integer number (2899948324).

Almost surely, 2^78282117459 is an apocalyptic number.

78282117459 is a deficient number, since it is larger than the sum of its proper divisors (60915402093).

78282117459 is a wasteful number, since it uses less digits than its factorization.

78282117459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20156 (or 20153 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The spelling of 78282117459 in words is "seventy-eight billion, two hundred eighty-two million, one hundred seventeen thousand, four hundred fifty-nine".