8142208155378 has 96 divisors (see below), whose sum is σ = 19970218457280. Its totient is φ = 2465825924160.

The previous prime is 8142208155223. The next prime is 8142208155379. The reversal of 8142208155378 is 8735518022418.

It is a happy number.

8142208155378 is a `hidden beast` number, since 8 + 1 + 4 + 2 + 2 + 0 + 81 + 553 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8142208155379) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8286208 + ... + 9216596.

It is an arithmetic number, because the mean of its divisors is an integer number (208023108930).

Almost surely, 2^{8142208155378} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8142208155378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9985109228640).

8142208155378 is an abundant number, since it is smaller than the sum of its proper divisors (11828010301902).

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

8142208155378 is a wasteful number, since it uses less digits than its factorization.

8142208155378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932054 (or 932042 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

The spelling of 8142208155378 in words is "eight trillion, one hundred forty-two billion, two hundred eight million, one hundred fifty-five thousand, three hundred seventy-eight".