378811463801 has 4 divisors (see below), whose sum is σ = 391873928100. Its totient is φ = 365748999504.

The previous prime is 378811463729. The next prime is 378811463803. The reversal of 378811463801 is 108364118873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108364118873 = 114343 ⋅947711.

It can be written as a sum of positive squares in 2 ways, for example, as 288880450576 + 89931013225 = 537476^2 + 299885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378811463801 is a prime.

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 378811463801.

It is not an unprimeable number, because it can be changed into a prime (378811463803) 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 3 ways as a sum of consecutive naturals, for example, 6531232106 + ... + 6531232163.

It is an arithmetic number, because the mean of its divisors is an integer number (97968482025).

Almost surely, 2^378811463801 is an apocalyptic number.

It is an amenable number.

378811463801 is a deficient number, since it is larger than the sum of its proper divisors (13062464299).

378811463801 is a wasteful number, since it uses less digits than its factorization.

378811463801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13062464298.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 378811463801 in words is "three hundred seventy-eight billion, eight hundred eleven million, four hundred sixty-three thousand, eight hundred one".