378385469279 has 4 divisors (see below), whose sum is σ = 381921782184. Its totient is φ = 374849156376.

The previous prime is 378385469269. The next prime is 378385469291. The reversal of 378385469279 is 972964583873.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378385469279 is a prime.

It is a super-2 number, since 2×378385469279² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378385469269) 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, 1768156292 + ... + 1768156505.

It is an arithmetic number, because the mean of its divisors is an integer number (95480445546).

Almost surely, 2^378385469279 is an apocalyptic number.

378385469279 is a deficient number, since it is larger than the sum of its proper divisors (3536312905).

378385469279 is a wasteful number, since it uses less digits than its factorization.

378385469279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536312904.

The product of its digits is 548674560, while the sum is 71.

The spelling of 378385469279 in words is "three hundred seventy-eight billion, three hundred eighty-five million, four hundred sixty-nine thousand, two hundred seventy-nine".