78948084987 has 6 divisors (see below), whose sum is σ = 114036122772. Its totient is φ = 52632056652.

The previous prime is 78948084799. The next prime is 78948084991.

78948084987 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78948084987 - 2⁸ = 78948084731 is a prime.

It is a super-2 number, since 2×78948084987² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78948084997) 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 5 ways as a sum of consecutive naturals, for example, 4386004713 + ... + 4386004730.

It is an arithmetic number, because the mean of its divisors is an integer number (19006020462).

Almost surely, 2^78948084987 is an apocalyptic number.

78948084987 is a deficient number, since it is larger than the sum of its proper divisors (35088037785).

78948084987 is a wasteful number, since it uses less digits than its factorization.

78948084987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772009449 (or 8772009446 counting only the distinct ones).

The product of its (nonzero) digits is 260112384, while the sum is 72.

The spelling of 78948084987 in words is "seventy-eight billion, nine hundred forty-eight million, eighty-four thousand, nine hundred eighty-seven".