78888884444444 has 12 divisors (see below), whose sum is σ = 141786778799064. Its totient is φ = 38378376216144.

The previous prime is 78888884444417. The next prime is 78888884444479. The reversal of 78888884444444 is 44444448888887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266516501354 + ... + 266516501649.

It is an arithmetic number, because the mean of its divisors is an integer number (11815564899922).

Almost surely, 2^{78888884444444} is an apocalyptic number.

78888884444444 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

78888884444444 is a deficient number, since it is larger than the sum of its proper divisors (62897894354620).

78888884444444 is a wasteful number, since it uses less digits than its factorization.

78888884444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533033003044 (or 533033003042 counting only the distinct ones).

The product of its digits is 30064771072, while the sum is 83.

The spelling of 78888884444444 in words is "seventy-eight trillion, eight hundred eighty-eight billion, eight hundred eighty-four million, four hundred forty-four thousand, four hundred forty-four".