378311667823 has 16 divisors (see below), whose sum is σ = 402572125440. Its totient is φ = 354275107200.

The previous prime is 378311667821. The next prime is 378311667871. The reversal of 378311667823 is 328766113873.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 378311667823 - 2¹ = 378311667821 is a prime.

It is a super-2 number, since 2×378311667823² (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 (378311667821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15738508 + ... + 15762526.

It is an arithmetic number, because the mean of its divisors is an integer number (25160757840).

Almost surely, 2^378311667823 is an apocalyptic number.

378311667823 is a deficient number, since it is larger than the sum of its proper divisors (24260457617).

378311667823 is a wasteful number, since it uses less digits than its factorization.

378311667823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28638.

The product of its digits is 6096384, while the sum is 55.

The spelling of 378311667823 in words is "three hundred seventy-eight billion, three hundred eleven million, six hundred sixty-seven thousand, eight hundred twenty-three".