78168378382 has 8 divisors (see below), whose sum is σ = 123423755400. Its totient is φ = 37027126584.

The previous prime is 78168378377. The next prime is 78168378413. The reversal of 78168378382 is 28387386187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78168378382² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78168378382.

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, 1028531257 + ... + 1028531332.

It is an arithmetic number, because the mean of its divisors is an integer number (15427969425).

Almost surely, 2^78168378382 is an apocalyptic number.

78168378382 is a deficient number, since it is larger than the sum of its proper divisors (45255377018).

78168378382 is a wasteful number, since it uses less digits than its factorization.

78168378382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057062610.

The product of its digits is 21676032, while the sum is 61.

The spelling of 78168378382 in words is "seventy-eight billion, one hundred sixty-eight million, three hundred seventy-eight thousand, three hundred eighty-two".