78211184888 has 96 divisors (see below), whose sum is σ = 159954426000. Its totient is φ = 35751283200.

The previous prime is 78211184881. The next prime is 78211184897. The reversal of 78211184888 is 88848111287.

It is a happy number.

It is a super-2 number, since 2×78211184888² (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 (78211184881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83114498 + ... + 83115438.

Almost surely, 2^78211184888 is an apocalyptic number.

It is an amenable number.

78211184888 is an abundant number, since it is smaller than the sum of its proper divisors (81743241112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78211184888 is a wasteful number, since it uses less digits than its factorization.

78211184888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1562 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 56.

The spelling of 78211184888 in words is "seventy-eight billion, two hundred eleven million, one hundred eighty-four thousand, eight hundred eighty-eight".