378855382818 has 64 divisors (see below), whose sum is σ = 913269676032. Its totient is φ = 103353550080.

The previous prime is 378855382817. The next prime is 378855382823. The reversal of 378855382818 is 818283558873.

It is a super-2 number, since 2×378855382818² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (378855382817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7314646 + ... + 7366257.

It is an arithmetic number, because the mean of its divisors is an integer number (14269838688).

Almost surely, 2^378855382818 is an apocalyptic number.

378855382818 is an abundant number, since it is smaller than the sum of its proper divisors (534414293214).

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

378855382818 is a wasteful number, since it uses less digits than its factorization.

378855382818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14680959.

The product of its digits is 103219200, while the sum is 66.

The spelling of 378855382818 in words is "three hundred seventy-eight billion, eight hundred fifty-five million, three hundred eighty-two thousand, eight hundred eighteen".