378667398669 has 16 divisors (see below), whose sum is σ = 584321003520. Its totient is φ = 213642365040.

The previous prime is 378667398649. The next prime is 378667398679. The reversal of 378667398669 is 966893766873.

It is not a de Polignac number, because 378667398669 - 2¹¹ = 378667396621 is a prime.

It is a super-2 number, since 2×378667398669² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 378667398594 and 378667398603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378667398649) 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 15 ways as a sum of consecutive naturals, for example, 114123537 + ... + 114126854.

It is an arithmetic number, because the mean of its divisors is an integer number (36520062720).

Almost surely, 2^378667398669 is an apocalyptic number.

It is an amenable number.

378667398669 is a deficient number, since it is larger than the sum of its proper divisors (205653604851).

378667398669 is a wasteful number, since it uses less digits than its factorization.

378667398669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228250480.

The product of its digits is 2962842624, while the sum is 78.

The spelling of 378667398669 in words is "three hundred seventy-eight billion, six hundred sixty-seven million, three hundred ninety-eight thousand, six hundred sixty-nine".