378544630273 has 2 divisors, whose sum is σ = 378544630274. Its totient is φ = 378544630272.

The previous prime is 378544630237. The next prime is 378544630283. The reversal of 378544630273 is 372036445873.

Together with previous prime (378544630237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302518700289 + 76025929984 = 550017^2 + 275728^2 .

It is a cyclic number.

It is not a de Polignac number, because 378544630273 - 2⁹ = 378544629761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378544630273.

It is not a weakly prime, because it can be changed into another prime (378544630283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189272315136 + 189272315137.

It is an arithmetic number, because the mean of its divisors is an integer number (189272315137).

Almost surely, 2^378544630273 is an apocalyptic number.

It is an amenable number.

378544630273 is a deficient number, since it is larger than the sum of its proper divisors (1).

378544630273 is an equidigital number, since it uses as much as digits as its factorization.

378544630273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 52.

The spelling of 378544630273 in words is "three hundred seventy-eight billion, five hundred forty-four million, six hundred thirty thousand, two hundred seventy-three".