378139496473 has 4 divisors (see below), whose sum is σ = 378140802340. Its totient is φ = 378138190608.

The previous prime is 378139496461. The next prime is 378139496491. The reversal of 378139496473 is 374694931873.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 374694931873 = 439 ⋅853519207.

It can be written as a sum of positive squares in 2 ways, for example, as 295579243584 + 82560252889 = 543672^2 + 287333^2 .

It is a cyclic number.

It is not a de Polignac number, because 378139496473 - 2³³ = 369549561881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378139496453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790 + ... + 869647.

It is an arithmetic number, because the mean of its divisors is an integer number (94535200585).

Almost surely, 2^378139496473 is an apocalyptic number.

It is an amenable number.

378139496473 is a deficient number, since it is larger than the sum of its proper divisors (1305867).

378139496473 is an equidigital number, since it uses as much as digits as its factorization.

378139496473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305866.

The product of its digits is 82301184, while the sum is 64.

The spelling of 378139496473 in words is "three hundred seventy-eight billion, one hundred thirty-nine million, four hundred ninety-six thousand, four hundred seventy-three".