78896869888 has 20 divisors (see below), whose sum is σ = 157639645350. Its totient is φ = 39448434688.

The previous prime is 78896869873. The next prime is 78896869907. The reversal of 78896869888 is 88896869887.

It can be written as a sum of positive squares in only one way, i.e., 74620756224 + 4276113664 = 273168^2 + 65392^2 .

It is a super-3 number, since 3×78896869888³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77047213 + ... + 77048236.

Almost surely, 2^78896869888 is an apocalyptic number.

It is an amenable number.

78896869888 is a deficient number, since it is larger than the sum of its proper divisors (78742775462).

78896869888 is an equidigital number, since it uses as much as digits as its factorization.

78896869888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154095467 (or 154095451 counting only the distinct ones).

The product of its digits is 5350883328, while the sum is 85.

Subtracting 78896869888 from its reverse (88896869887), we obtain a palindrome (9999999999).

The spelling of 78896869888 in words is "seventy-eight billion, eight hundred ninety-six million, eight hundred sixty-nine thousand, eight hundred eighty-eight".