378815628445 has 16 divisors (see below), whose sum is σ = 499308474240. Its totient is φ = 274619657664.

The previous prime is 378815628439. The next prime is 378815628463. The reversal of 378815628445 is 544826518873.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378815628445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86683314 + ... + 86687683.

It is an arithmetic number, because the mean of its divisors is an integer number (31206779640).

Almost surely, 2^378815628445 is an apocalyptic number.

It is an amenable number.

378815628445 is a deficient number, since it is larger than the sum of its proper divisors (120492845795).

378815628445 is a wasteful number, since it uses less digits than its factorization.

378815628445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173371044.

The product of its digits is 51609600, while the sum is 61.

The spelling of 378815628445 in words is "three hundred seventy-eight billion, eight hundred fifteen million, six hundred twenty-eight thousand, four hundred forty-five".