378861665474 has 8 divisors (see below), whose sum is σ = 601721468748. Its totient is φ = 178287842560.

The previous prime is 378861665471. The next prime is 378861665477. The reversal of 378861665474 is 474566168873.

It is an interprime number because it is at equal distance from previous prime (378861665471) and next prime (378861665477).

It can be written as a sum of positive squares in 2 ways, for example, as 378049130449 + 812535025 = 614857^2 + 28505^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 378861665474.

It is not an unprimeable number, because it can be changed into a prime (378861665471) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5571495047 + ... + 5571495114.

Almost surely, 2^378861665474 is an apocalyptic number.

378861665474 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

378861665474 is a deficient number, since it is larger than the sum of its proper divisors (222859803274).

378861665474 is a wasteful number, since it uses less digits than its factorization.

378861665474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11142990180.

The product of its digits is 162570240, while the sum is 65.

The spelling of 378861665474 in words is "three hundred seventy-eight billion, eight hundred sixty-one million, six hundred sixty-five thousand, four hundred seventy-four".