78884479936 has 28 divisors (see below), whose sum is σ = 157401254920. Its totient is φ = 39224321280.

The previous prime is 78884479913. The next prime is 78884479937. The reversal of 78884479936 is 63997448887.

It is a super-2 number, since 2×78884479936² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78884479937) 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 3 ways as a sum of consecutive naturals, for example, 3393306 + ... + 3416473.

It is an arithmetic number, because the mean of its divisors is an integer number (5621473390).

Almost surely, 2^78884479936 is an apocalyptic number.

It is an amenable number.

78884479936 is a deficient number, since it is larger than the sum of its proper divisors (78516774984).

78884479936 is a wasteful number, since it uses less digits than its factorization.

78884479936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809972 (or 6809962 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 73.

The spelling of 78884479936 in words is "seventy-eight billion, eight hundred eighty-four million, four hundred seventy-nine thousand, nine hundred thirty-six".