378778028443 has 4 divisors (see below), whose sum is σ = 378783842200. Its totient is φ = 378772214688.

The previous prime is 378778028341. The next prime is 378778028477. The reversal of 378778028443 is 344820877873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378778028443 - 2¹³ = 378778020251 is a prime.

It is a super-2 number, since 2×378778028443² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378778022443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2808030 + ... + 2939827.

It is an arithmetic number, because the mean of its divisors is an integer number (94695960550).

Almost surely, 2^378778028443 is an apocalyptic number.

378778028443 is a deficient number, since it is larger than the sum of its proper divisors (5813757).

378778028443 is an equidigital number, since it uses as much as digits as its factorization.

378778028443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813756.

The product of its (nonzero) digits is 50577408, while the sum is 61.

The spelling of 378778028443 in words is "three hundred seventy-eight billion, seven hundred seventy-eight million, twenty-eight thousand, four hundred forty-three".