378874316677 has 2 divisors, whose sum is σ = 378874316678. Its totient is φ = 378874316676.

The previous prime is 378874316669. The next prime is 378874316731. The reversal of 378874316677 is 776613478873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374386120641 + 4488196036 = 611871^2 + 66994^2 .

It is a cyclic number.

It is not a de Polignac number, because 378874316677 - 2³ = 378874316669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378874316647) 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 as a sum of consecutive naturals, namely, 189437158338 + 189437158339.

It is an arithmetic number, because the mean of its divisors is an integer number (189437158339).

Almost surely, 2^378874316677 is an apocalyptic number.

It is an amenable number.

378874316677 is a deficient number, since it is larger than the sum of its proper divisors (1).

378874316677 is an equidigital number, since it uses as much as digits as its factorization.

378874316677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 199148544, while the sum is 67.

The spelling of 378874316677 in words is "three hundred seventy-eight billion, eight hundred seventy-four million, three hundred sixteen thousand, six hundred seventy-seven".