78795459787 has 48 divisors (see below), whose sum is σ = 89009915904. Its totient is φ = 69684912000.

The previous prime is 78795459773. The next prime is 78795459881.

78795459787 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78795459787 - 2¹¹ = 78795457739 is a prime.

It is a super-4 number, since 4×78795459787⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78795459727) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 338177823 + ... + 338178055.

It is an arithmetic number, because the mean of its divisors is an integer number (1854373248).

Almost surely, 2^78795459787 is an apocalyptic number.

78795459787 is a deficient number, since it is larger than the sum of its proper divisors (10214456117).

78795459787 is a wasteful number, since it uses less digits than its factorization.

78795459787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 701 counting only the distinct ones).

The product of its digits is 1244678400, while the sum is 76.

The spelling of 78795459787 in words is "seventy-eight billion, seven hundred ninety-five million, four hundred fifty-nine thousand, seven hundred eighty-seven".