78273378288 has 120 divisors (see below), whose sum is σ = 251850213888. Its totient is φ = 22229859456.

The previous prime is 78273378263. The next prime is 78273378299. The reversal of 78273378288 is 88287337287.

It is a super-2 number, since 2×78273378288² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64156 + ... + 400827.

Almost surely, 2^78273378288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78273378288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125925106944).

78273378288 is an abundant number, since it is smaller than the sum of its proper divisors (173576835600).

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

78273378288 is a wasteful number, since it uses less digits than its factorization.

78273378288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465171 (or 465162 counting only the distinct ones).

The product of its digits is 50577408, while the sum is 63.

The spelling of 78273378288 in words is "seventy-eight billion, two hundred seventy-three million, three hundred seventy-eight thousand, two hundred eighty-eight".