378847748873 has 4 divisors (see below), whose sum is σ = 413288453328. Its totient is φ = 344407044420.

The previous prime is 378847748843. The next prime is 378847748879.

378847748873 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 378847748873 - 2¹⁸ = 378847486729 is a prime.

It is a super-2 number, since 2×378847748873² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378847748873.

It is not an unprimeable number, because it can be changed into a prime (378847748879) 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, 17220352211 + ... + 17220352232.

It is an arithmetic number, because the mean of its divisors is an integer number (103322113332).

Almost surely, 2^378847748873 is an apocalyptic number.

It is an amenable number.

378847748873 is a deficient number, since it is larger than the sum of its proper divisors (34440704455).

378847748873 is a wasteful number, since it uses less digits than its factorization.

378847748873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34440704454.

The product of its digits is 1416167424, while the sum is 74.

The spelling of 378847748873 in words is "three hundred seventy-eight billion, eight hundred forty-seven million, seven hundred forty-eight thousand, eight hundred seventy-three".